20856510

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:234

約数の個数: 96

約数和(自身を含む): 57451680

約数和(自身を除く): 36595170

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 58, 61, 87, 90, 122, 131, 145, 174, 183, 261, 262, 290, 305, 366, 393, 435, 522, 549, 610, 655, 786, 870, 915, 1098, 1179, 1305, 1310, 1769, 1830, 1965, 2358, 2610, 2745, 3538, 3799, 3930, 5307, 5490, 5895, 7598, 7991, 8845, 10614, 11397, 11790, 15921, 15982, 17690, 18995, 22794, 23973, 26535, 31842, 34191, 37990, 39955, 47946, 53070, 56985, 68382, 71919, 79605, 79910, 113970, 119865, 143838, 159210, 170955, 231739, 239730, 341910, 359595, 463478, 695217, 719190, 1158695, 1390434, 2085651, 2317390, 3476085, 4171302, 6952170, 10428255, 20856510]

約数ペア:

[(1, 20856510), (2, 10428255), (3, 6952170), (5, 4171302), (6, 3476085), (9, 2317390), (10, 2085651), (15, 1390434), (18, 1158695), (29, 719190), (30, 695217), (45, 463478), (58, 359595), (61, 341910), (87, 239730), (90, 231739), (122, 170955), (131, 159210), (145, 143838), (174, 119865), (183, 113970), (261, 79910), (262, 79605), (290, 71919), (305, 68382), (366, 56985), (393, 53070), (435, 47946), (522, 39955), (549, 37990), (610, 34191), (655, 31842), (786, 26535), (870, 23973), (915, 22794), (1098, 18995), (1179, 17690), (1305, 15982), (1310, 15921), (1769, 11790), (1830, 11397), (1965, 10614), (2358, 8845), (2610, 7991), (2745, 7598), (3538, 5895), (3799, 5490), (3930, 5307)]