20725100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:335

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 29146708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 83, 100, 110, 166, 220, 227, 275, 332, 415, 454, 550, 830, 908, 913, 1100, 1135, 1660, 1826, 2075, 2270, 2497, 3652, 4150, 4540, 4565, 4994, 5675, 8300, 9130, 9988, 11350, 12485, 18260, 18841, 22700, 22825, 24970, 37682, 45650, 49940, 62425, 75364, 91300, 94205, 124850, 188410, 207251, 249700, 376820, 414502, 471025, 829004, 942050, 1036255, 1884100, 2072510, 4145020, 5181275, 10362550, 20725100]

約数ペア:

[(1, 20725100), (2, 10362550), (4, 5181275), (5, 4145020), (10, 2072510), (11, 1884100), (20, 1036255), (22, 942050), (25, 829004), (44, 471025), (50, 414502), (55, 376820), (83, 249700), (100, 207251), (110, 188410), (166, 124850), (220, 94205), (227, 91300), (275, 75364), (332, 62425), (415, 49940), (454, 45650), (550, 37682), (830, 24970), (908, 22825), (913, 22700), (1100, 18841), (1135, 18260), (1660, 12485), (1826, 11350), (2075, 9988), (2270, 9130), (2497, 8300), (3652, 5675), (4150, 4994), (4540, 4565)]