21581580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:367

約数の個数: 96

約数和(自身を含む): 64124928

約数和(自身を除く): 42543348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 41, 60, 62, 82, 93, 123, 124, 155, 164, 186, 205, 246, 283, 310, 372, 410, 465, 492, 566, 615, 620, 820, 849, 930, 1132, 1230, 1271, 1415, 1698, 1860, 2460, 2542, 2830, 3396, 3813, 4245, 5084, 5660, 6355, 7626, 8490, 8773, 11603, 12710, 15252, 16980, 17546, 19065, 23206, 25420, 26319, 34809, 35092, 38130, 43865, 46412, 52638, 58015, 69618, 76260, 87730, 105276, 116030, 131595, 139236, 174045, 175460, 232060, 263190, 348090, 359693, 526380, 696180, 719386, 1079079, 1438772, 1798465, 2158158, 3596930, 4316316, 5395395, 7193860, 10790790, 21581580]

約数ペア:

[(1, 21581580), (2, 10790790), (3, 7193860), (4, 5395395), (5, 4316316), (6, 3596930), (10, 2158158), (12, 1798465), (15, 1438772), (20, 1079079), (30, 719386), (31, 696180), (41, 526380), (60, 359693), (62, 348090), (82, 263190), (93, 232060), (123, 175460), (124, 174045), (155, 139236), (164, 131595), (186, 116030), (205, 105276), (246, 87730), (283, 76260), (310, 69618), (372, 58015), (410, 52638), (465, 46412), (492, 43865), (566, 38130), (615, 35092), (620, 34809), (820, 26319), (849, 25420), (930, 23206), (1132, 19065), (1230, 17546), (1271, 16980), (1415, 15252), (1698, 12710), (1860, 11603), (2460, 8773), (2542, 8490), (2830, 7626), (3396, 6355), (3813, 5660), (4245, 5084)]