81712540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 192

約数和(自身を含む): 237081600

約数和(自身を除く): 155369060

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 19, 20, 26, 28, 34, 35, 38, 52, 65, 68, 70, 76, 85, 91, 95, 119, 130, 133, 139, 140, 170, 182, 190, 221, 238, 247, 260, 266, 278, 323, 340, 364, 380, 442, 455, 476, 494, 532, 556, 595, 646, 665, 695, 884, 910, 973, 988, 1105, 1190, 1235, 1292, 1330, 1390, 1547, 1615, 1729, 1807, 1820, 1946, 2210, 2261, 2363, 2380, 2470, 2641, 2660, 2780, 3094, 3230, 3458, 3614, 3892, 4199, 4420, 4522, 4726, 4865, 4940, 5282, 6188, 6460, 6916, 7228, 7735, 8398, 8645, 9035, 9044, 9452, 9730, 10564, 11305, 11815, 12649, 13205, 15470, 16541, 16796, 17290, 18070, 18487, 19460, 20995, 22610, 23630, 25298, 26410, 29393, 30719, 30940, 33082, 34333, 34580, 36140, 36974, 41990, 44897, 45220, 47260, 50596, 52820, 58786, 61438, 63245, 66164, 68666, 73948, 82705, 83980, 89794, 92435, 117572, 122876, 126490, 137332, 146965, 153595, 165410, 171665, 179588, 184870, 215033, 224485, 240331, 252980, 293930, 307190, 314279, 330820, 343330, 369740, 430066, 448970, 480662, 583661, 587860, 614380, 628558, 686660, 860132, 897940, 961324, 1075165, 1167322, 1201655, 1257116, 1571395, 2150330, 2334644, 2403310, 2918305, 3142790, 4085627, 4300660, 4806620, 5836610, 6285580, 8171254, 11673220, 16342508, 20428135, 40856270, 81712540]

約数ペア:

[(1, 81712540), (2, 40856270), (4, 20428135), (5, 16342508), (7, 11673220), (10, 8171254), (13, 6285580), (14, 5836610), (17, 4806620), (19, 4300660), (20, 4085627), (26, 3142790), (28, 2918305), (34, 2403310), (35, 2334644), (38, 2150330), (52, 1571395), (65, 1257116), (68, 1201655), (70, 1167322), (76, 1075165), (85, 961324), (91, 897940), (95, 860132), (119, 686660), (130, 628558), (133, 614380), (139, 587860), (140, 583661), (170, 480662), (182, 448970), (190, 430066), (221, 369740), (238, 343330), (247, 330820), (260, 314279), (266, 307190), (278, 293930), (323, 252980), (340, 240331), (364, 224485), (380, 215033), (442, 184870), (455, 179588), (476, 171665), (494, 165410), (532, 153595), (556, 146965), (595, 137332), (646, 126490), (665, 122876), (695, 117572), (884, 92435), (910, 89794), (973, 83980), (988, 82705), (1105, 73948), (1190, 68666), (1235, 66164), (1292, 63245), (1330, 61438), (1390, 58786), (1547, 52820), (1615, 50596), (1729, 47260), (1807, 45220), (1820, 44897), (1946, 41990), (2210, 36974), (2261, 36140), (2363, 34580), (2380, 34333), (2470, 33082), (2641, 30940), (2660, 30719), (2780, 29393), (3094, 26410), (3230, 25298), (3458, 23630), (3614, 22610), (3892, 20995), (4199, 19460), (4420, 18487), (4522, 18070), (4726, 17290), (4865, 16796), (4940, 16541), (5282, 15470), (6188, 13205), (6460, 12649), (6916, 11815), (7228, 11305), (7735, 10564), (8398, 9730), (8645, 9452), (9035, 9044)]