31445960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 89268480

約数和(自身を除く): 57822520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 53, 56, 65, 70, 91, 104, 106, 130, 140, 163, 182, 212, 260, 265, 280, 326, 364, 371, 424, 455, 520, 530, 652, 689, 728, 742, 815, 910, 1060, 1141, 1304, 1378, 1484, 1630, 1820, 1855, 2119, 2120, 2282, 2756, 2968, 3260, 3445, 3640, 3710, 4238, 4564, 4823, 5512, 5705, 6520, 6890, 7420, 8476, 8639, 9128, 9646, 10595, 11410, 13780, 14833, 14840, 16952, 17278, 19292, 21190, 22820, 24115, 27560, 29666, 34556, 38584, 42380, 43195, 45640, 48230, 59332, 60473, 69112, 74165, 84760, 86390, 96460, 112307, 118664, 120946, 148330, 172780, 192920, 224614, 241892, 296660, 302365, 345560, 449228, 483784, 561535, 593320, 604730, 786149, 898456, 1123070, 1209460, 1572298, 2246140, 2418920, 3144596, 3930745, 4492280, 6289192, 7861490, 15722980, 31445960]

約数ペア:

[(1, 31445960), (2, 15722980), (4, 7861490), (5, 6289192), (7, 4492280), (8, 3930745), (10, 3144596), (13, 2418920), (14, 2246140), (20, 1572298), (26, 1209460), (28, 1123070), (35, 898456), (40, 786149), (52, 604730), (53, 593320), (56, 561535), (65, 483784), (70, 449228), (91, 345560), (104, 302365), (106, 296660), (130, 241892), (140, 224614), (163, 192920), (182, 172780), (212, 148330), (260, 120946), (265, 118664), (280, 112307), (326, 96460), (364, 86390), (371, 84760), (424, 74165), (455, 69112), (520, 60473), (530, 59332), (652, 48230), (689, 45640), (728, 43195), (742, 42380), (815, 38584), (910, 34556), (1060, 29666), (1141, 27560), (1304, 24115), (1378, 22820), (1484, 21190), (1630, 19292), (1820, 17278), (1855, 16952), (2119, 14840), (2120, 14833), (2282, 13780), (2756, 11410), (2968, 10595), (3260, 9646), (3445, 9128), (3640, 8639), (3710, 8476), (4238, 7420), (4564, 6890), (4823, 6520), (5512, 5705)]