21681090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:472

約数の個数: 96

約数和(自身を含む): 61401600

約数和(自身を除く): 39720510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 31, 38, 45, 57, 62, 90, 93, 95, 114, 155, 171, 186, 190, 279, 285, 310, 342, 409, 465, 558, 570, 589, 818, 855, 930, 1178, 1227, 1395, 1710, 1767, 2045, 2454, 2790, 2945, 3534, 3681, 4090, 5301, 5890, 6135, 7362, 7771, 8835, 10602, 12270, 12679, 15542, 17670, 18405, 23313, 25358, 26505, 36810, 38037, 38855, 46626, 53010, 63395, 69939, 76074, 77710, 114111, 116565, 126790, 139878, 190185, 228222, 233130, 240901, 349695, 380370, 481802, 570555, 699390, 722703, 1141110, 1204505, 1445406, 2168109, 2409010, 3613515, 4336218, 7227030, 10840545, 21681090]

約数ペア:

[(1, 21681090), (2, 10840545), (3, 7227030), (5, 4336218), (6, 3613515), (9, 2409010), (10, 2168109), (15, 1445406), (18, 1204505), (19, 1141110), (30, 722703), (31, 699390), (38, 570555), (45, 481802), (57, 380370), (62, 349695), (90, 240901), (93, 233130), (95, 228222), (114, 190185), (155, 139878), (171, 126790), (186, 116565), (190, 114111), (279, 77710), (285, 76074), (310, 69939), (342, 63395), (409, 53010), (465, 46626), (558, 38855), (570, 38037), (589, 36810), (818, 26505), (855, 25358), (930, 23313), (1178, 18405), (1227, 17670), (1395, 15542), (1710, 12679), (1767, 12270), (2045, 10602), (2454, 8835), (2790, 7771), (2945, 7362), (3534, 6135), (3681, 5890), (4090, 5301)]