17887220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{773}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 40960080

約数和(自身を除く): 23072860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 773, 890, 1157, 1546, 1780, 2314, 3092, 3865, 4628, 5785, 7730, 10049, 11570, 15460, 20098, 23140, 40196, 50245, 68797, 100490, 137594, 200980, 275188, 343985, 687970, 894361, 1375940, 1788722, 3577444, 4471805, 8943610, 17887220]

約数ペア:

[(1, 17887220), (2, 8943610), (4, 4471805), (5, 3577444), (10, 1788722), (13, 1375940), (20, 894361), (26, 687970), (52, 343985), (65, 275188), (89, 200980), (130, 137594), (178, 100490), (260, 68797), (356, 50245), (445, 40196), (773, 23140), (890, 20098), (1157, 15460), (1546, 11570), (1780, 10049), (2314, 7730), (3092, 5785), (3865, 4628)]