28902890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 56431512

約数和(自身を除く): 27528622

約数列:

[1, 2, 5, 10, 17, 34, 73, 85, 137, 146, 170, 274, 289, 365, 578, 685, 730, 1241, 1370, 1445, 2329, 2482, 2890, 4658, 6205, 10001, 11645, 12410, 20002, 21097, 23290, 39593, 42194, 50005, 79186, 100010, 105485, 170017, 197965, 210970, 340034, 395930, 850085, 1700170, 2890289, 5780578, 14451445, 28902890]

約数ペア:

[(1, 28902890), (2, 14451445), (5, 5780578), (10, 2890289), (17, 1700170), (34, 850085), (73, 395930), (85, 340034), (137, 210970), (146, 197965), (170, 170017), (274, 105485), (289, 100010), (365, 79186), (578, 50005), (685, 42194), (730, 39593), (1241, 23290), (1370, 21097), (1445, 20002), (2329, 12410), (2482, 11645), (2890, 10001), (4658, 6205)]