18878132

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 42900480

約数和(自身を除く): 24022348

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 49, 52, 62, 91, 98, 124, 182, 196, 217, 239, 364, 403, 434, 478, 637, 806, 868, 956, 1274, 1519, 1612, 1673, 2548, 2821, 3038, 3107, 3346, 5642, 6076, 6214, 6692, 7409, 11284, 11711, 12428, 14818, 19747, 21749, 23422, 29636, 39494, 43498, 46844, 51863, 78988, 86996, 96317, 103726, 152243, 192634, 207452, 304486, 363041, 385268, 608972, 674219, 726082, 1348438, 1452164, 2696876, 4719533, 9439066, 18878132]

約数ペア:

[(1, 18878132), (2, 9439066), (4, 4719533), (7, 2696876), (13, 1452164), (14, 1348438), (26, 726082), (28, 674219), (31, 608972), (49, 385268), (52, 363041), (62, 304486), (91, 207452), (98, 192634), (124, 152243), (182, 103726), (196, 96317), (217, 86996), (239, 78988), (364, 51863), (403, 46844), (434, 43498), (478, 39494), (637, 29636), (806, 23422), (868, 21749), (956, 19747), (1274, 14818), (1519, 12428), (1612, 11711), (1673, 11284), (2548, 7409), (2821, 6692), (3038, 6214), (3107, 6076), (3346, 5642)]