15648040

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 36867600

約数和(自身を除く): 21219560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 97, 109, 148, 185, 194, 218, 296, 370, 388, 436, 485, 545, 740, 776, 872, 970, 1090, 1480, 1940, 2180, 3589, 3880, 4033, 4360, 7178, 8066, 10573, 14356, 16132, 17945, 20165, 21146, 28712, 32264, 35890, 40330, 42292, 52865, 71780, 80660, 84584, 105730, 143560, 161320, 211460, 391201, 422920, 782402, 1564804, 1956005, 3129608, 3912010, 7824020, 15648040]

約数ペア:

[(1, 15648040), (2, 7824020), (4, 3912010), (5, 3129608), (8, 1956005), (10, 1564804), (20, 782402), (37, 422920), (40, 391201), (74, 211460), (97, 161320), (109, 143560), (148, 105730), (185, 84584), (194, 80660), (218, 71780), (296, 52865), (370, 42292), (388, 40330), (436, 35890), (485, 32264), (545, 28712), (740, 21146), (776, 20165), (872, 17945), (970, 16132), (1090, 14356), (1480, 10573), (1940, 8066), (2180, 7178), (3589, 4360), (3880, 4033)]