81446540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1$

素因数の和:559

約数の個数: 96

約数和(自身を含む): 209287680

約数和(自身を除く): 127841140

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 67, 70, 76, 95, 133, 134, 140, 190, 266, 268, 335, 380, 457, 469, 532, 665, 670, 914, 938, 1273, 1330, 1340, 1828, 1876, 2285, 2345, 2546, 2660, 3199, 4570, 4690, 5092, 6365, 6398, 8683, 8911, 9140, 9380, 12730, 12796, 15995, 17366, 17822, 25460, 30619, 31990, 34732, 35644, 43415, 44555, 60781, 61238, 63980, 86830, 89110, 121562, 122476, 153095, 173660, 178220, 214333, 243124, 303905, 306190, 428666, 581761, 607810, 612380, 857332, 1071665, 1163522, 1215620, 2143330, 2327044, 2908805, 4072327, 4286660, 5817610, 8144654, 11635220, 16289308, 20361635, 40723270, 81446540]

約数ペア:

[(1, 81446540), (2, 40723270), (4, 20361635), (5, 16289308), (7, 11635220), (10, 8144654), (14, 5817610), (19, 4286660), (20, 4072327), (28, 2908805), (35, 2327044), (38, 2143330), (67, 1215620), (70, 1163522), (76, 1071665), (95, 857332), (133, 612380), (134, 607810), (140, 581761), (190, 428666), (266, 306190), (268, 303905), (335, 243124), (380, 214333), (457, 178220), (469, 173660), (532, 153095), (665, 122476), (670, 121562), (914, 89110), (938, 86830), (1273, 63980), (1330, 61238), (1340, 60781), (1828, 44555), (1876, 43415), (2285, 35644), (2345, 34732), (2546, 31990), (2660, 30619), (3199, 25460), (4570, 17822), (4690, 17366), (5092, 15995), (6365, 12796), (6398, 12730), (8683, 9380), (8911, 9140)]