18892640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1$

素因数の和:352

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 30894496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 293, 310, 403, 416, 496, 520, 586, 620, 806, 992, 1040, 1172, 1240, 1465, 1612, 2015, 2080, 2344, 2480, 2930, 3224, 3809, 4030, 4688, 4960, 5860, 6448, 7618, 8060, 9083, 9376, 11720, 12896, 15236, 16120, 18166, 19045, 23440, 30472, 32240, 36332, 38090, 45415, 46880, 60944, 64480, 72664, 76180, 90830, 118079, 121888, 145328, 152360, 181660, 236158, 290656, 304720, 363320, 472316, 590395, 609440, 726640, 944632, 1180790, 1453280, 1889264, 2361580, 3778528, 4723160, 9446320, 18892640]

約数ペア:

[(1, 18892640), (2, 9446320), (4, 4723160), (5, 3778528), (8, 2361580), (10, 1889264), (13, 1453280), (16, 1180790), (20, 944632), (26, 726640), (31, 609440), (32, 590395), (40, 472316), (52, 363320), (62, 304720), (65, 290656), (80, 236158), (104, 181660), (124, 152360), (130, 145328), (155, 121888), (160, 118079), (208, 90830), (248, 76180), (260, 72664), (293, 64480), (310, 60944), (403, 46880), (416, 45415), (496, 38090), (520, 36332), (586, 32240), (620, 30472), (806, 23440), (992, 19045), (1040, 18166), (1172, 16120), (1240, 15236), (1465, 12896), (1612, 11720), (2015, 9376), (2080, 9083), (2344, 8060), (2480, 7618), (2930, 6448), (3224, 5860), (3809, 4960), (4030, 4688)]