20459780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{823}}^1$

素因数の和:956

約数の個数: 48

約数和(自身を含む): 47343744

約数和(自身を除く): 26883964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 823, 1130, 1243, 1646, 2260, 2486, 3292, 4115, 4972, 6215, 8230, 9053, 12430, 16460, 18106, 24860, 36212, 45265, 90530, 92999, 181060, 185998, 371996, 464995, 929990, 1022989, 1859980, 2045978, 4091956, 5114945, 10229890, 20459780]

約数ペア:

[(1, 20459780), (2, 10229890), (4, 5114945), (5, 4091956), (10, 2045978), (11, 1859980), (20, 1022989), (22, 929990), (44, 464995), (55, 371996), (110, 185998), (113, 181060), (220, 92999), (226, 90530), (452, 45265), (565, 36212), (823, 24860), (1130, 18106), (1243, 16460), (1646, 12430), (2260, 9053), (2486, 8230), (3292, 6215), (4115, 4972)]