18738460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{743}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 42872256

約数和(自身を除く): 24133796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 743, 970, 1261, 1486, 1940, 2522, 2972, 3715, 5044, 6305, 7430, 9659, 12610, 14860, 19318, 25220, 38636, 48295, 72071, 96590, 144142, 193180, 288284, 360355, 720710, 936923, 1441420, 1873846, 3747692, 4684615, 9369230, 18738460]

約数ペア:

[(1, 18738460), (2, 9369230), (4, 4684615), (5, 3747692), (10, 1873846), (13, 1441420), (20, 936923), (26, 720710), (52, 360355), (65, 288284), (97, 193180), (130, 144142), (194, 96590), (260, 72071), (388, 48295), (485, 38636), (743, 25220), (970, 19318), (1261, 14860), (1486, 12610), (1940, 9659), (2522, 7430), (2972, 6305), (3715, 5044)]