18955860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{373}}^1$

素因数の和:414

約数の個数: 144

約数和(自身を含む): 66853248

約数和(自身を除く): 47897388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 121, 132, 140, 154, 165, 210, 220, 231, 242, 308, 330, 363, 373, 385, 420, 462, 484, 605, 660, 726, 746, 770, 847, 924, 1119, 1155, 1210, 1452, 1492, 1540, 1694, 1815, 1865, 2238, 2310, 2420, 2541, 2611, 3388, 3630, 3730, 4103, 4235, 4476, 4620, 5082, 5222, 5595, 7260, 7460, 7833, 8206, 8470, 10164, 10444, 11190, 12309, 12705, 13055, 15666, 16412, 16940, 20515, 22380, 24618, 25410, 26110, 28721, 31332, 39165, 41030, 45133, 49236, 50820, 52220, 57442, 61545, 78330, 82060, 86163, 90266, 114884, 123090, 135399, 143605, 156660, 172326, 180532, 225665, 246180, 270798, 287210, 315931, 344652, 430815, 451330, 541596, 574420, 631862, 676995, 861630, 902660, 947793, 1263724, 1353990, 1579655, 1723260, 1895586, 2707980, 3159310, 3791172, 4738965, 6318620, 9477930, 18955860]

約数ペア:

[(1, 18955860), (2, 9477930), (3, 6318620), (4, 4738965), (5, 3791172), (6, 3159310), (7, 2707980), (10, 1895586), (11, 1723260), (12, 1579655), (14, 1353990), (15, 1263724), (20, 947793), (21, 902660), (22, 861630), (28, 676995), (30, 631862), (33, 574420), (35, 541596), (42, 451330), (44, 430815), (55, 344652), (60, 315931), (66, 287210), (70, 270798), (77, 246180), (84, 225665), (105, 180532), (110, 172326), (121, 156660), (132, 143605), (140, 135399), (154, 123090), (165, 114884), (210, 90266), (220, 86163), (231, 82060), (242, 78330), (308, 61545), (330, 57442), (363, 52220), (373, 50820), (385, 49236), (420, 45133), (462, 41030), (484, 39165), (605, 31332), (660, 28721), (726, 26110), (746, 25410), (770, 24618), (847, 22380), (924, 20515), (1119, 16940), (1155, 16412), (1210, 15666), (1452, 13055), (1492, 12705), (1540, 12309), (1694, 11190), (1815, 10444), (1865, 10164), (2238, 8470), (2310, 8206), (2420, 7833), (2541, 7460), (2611, 7260), (3388, 5595), (3630, 5222), (3730, 5082), (4103, 4620), (4235, 4476)]