38915678980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1\times {\mathrm{60899}}^1$

素因数の和:61356

約数の個数: 48

約数和(自身を含む): 82872720000

約数和(自身を除く): 43957041020

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 359, 445, 718, 890, 1436, 1780, 1795, 3590, 7180, 31951, 60899, 63902, 121798, 127804, 159755, 243596, 304495, 319510, 608990, 639020, 1217980, 5420011, 10840022, 21680044, 21862741, 27100055, 43725482, 54200110, 87450964, 108400220, 109313705, 218627410, 437254820, 1945783949, 3891567898, 7783135796, 9728919745, 19457839490, 38915678980]

約数ペア:

[(1, 38915678980), (2, 19457839490), (4, 9728919745), (5, 7783135796), (10, 3891567898), (20, 1945783949), (89, 437254820), (178, 218627410), (356, 109313705), (359, 108400220), (445, 87450964), (718, 54200110), (890, 43725482), (1436, 27100055), (1780, 21862741), (1795, 21680044), (3590, 10840022), (7180, 5420011), (31951, 1217980), (60899, 639020), (63902, 608990), (121798, 319510), (127804, 304495), (159755, 243596)]