25555460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 63345240

約数和(自身を除く): 37789780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 293, 356, 445, 490, 586, 623, 890, 980, 1172, 1246, 1465, 1780, 2051, 2492, 2930, 3115, 4102, 4361, 5860, 6230, 8204, 8722, 10255, 12460, 14357, 17444, 20510, 21805, 26077, 28714, 41020, 43610, 52154, 57428, 71785, 87220, 104308, 130385, 143570, 182539, 260770, 287140, 365078, 521540, 730156, 912695, 1277773, 1825390, 2555546, 3650780, 5111092, 6388865, 12777730, 25555460]

約数ペア:

[(1, 25555460), (2, 12777730), (4, 6388865), (5, 5111092), (7, 3650780), (10, 2555546), (14, 1825390), (20, 1277773), (28, 912695), (35, 730156), (49, 521540), (70, 365078), (89, 287140), (98, 260770), (140, 182539), (178, 143570), (196, 130385), (245, 104308), (293, 87220), (356, 71785), (445, 57428), (490, 52154), (586, 43610), (623, 41020), (890, 28714), (980, 26077), (1172, 21805), (1246, 20510), (1465, 17444), (1780, 14357), (2051, 12460), (2492, 10255), (2930, 8722), (3115, 8204), (4102, 6230), (4361, 5860)]