20843980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 46194624

約数和(自身を除く): 25350644

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 113, 115, 226, 230, 401, 452, 460, 565, 802, 1130, 1604, 2005, 2260, 2599, 4010, 5198, 8020, 9223, 10396, 12995, 18446, 25990, 36892, 45313, 46115, 51980, 90626, 92230, 181252, 184460, 226565, 453130, 906260, 1042199, 2084398, 4168796, 5210995, 10421990, 20843980]

約数ペア:

[(1, 20843980), (2, 10421990), (4, 5210995), (5, 4168796), (10, 2084398), (20, 1042199), (23, 906260), (46, 453130), (92, 226565), (113, 184460), (115, 181252), (226, 92230), (230, 90626), (401, 51980), (452, 46115), (460, 45313), (565, 36892), (802, 25990), (1130, 18446), (1604, 12995), (2005, 10396), (2260, 9223), (2599, 8020), (4010, 5198)]