256678380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203713}}^1$

素因数の和:203735

約数の個数: 72

約数和(自身を含む): 889822752

約数和(自身を除く): 633144372

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 203713, 407426, 611139, 814852, 1018565, 1222278, 1425991, 1833417, 2037130, 2444556, 2851982, 3055695, 3666834, 4074260, 4277973, 5703964, 6111390, 7129955, 7333668, 8555946, 9167085, 12222780, 12833919, 14259910, 17111892, 18334170, 21389865, 25667838, 28519820, 36668340, 42779730, 51335676, 64169595, 85559460, 128339190, 256678380]

約数ペア:

[(1, 256678380), (2, 128339190), (3, 85559460), (4, 64169595), (5, 51335676), (6, 42779730), (7, 36668340), (9, 28519820), (10, 25667838), (12, 21389865), (14, 18334170), (15, 17111892), (18, 14259910), (20, 12833919), (21, 12222780), (28, 9167085), (30, 8555946), (35, 7333668), (36, 7129955), (42, 6111390), (45, 5703964), (60, 4277973), (63, 4074260), (70, 3666834), (84, 3055695), (90, 2851982), (105, 2444556), (126, 2037130), (140, 1833417), (180, 1425991), (210, 1222278), (252, 1018565), (315, 814852), (420, 611139), (630, 407426), (1260, 203713)]