21793460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{769}}^1$

素因数の和:900

約数の個数: 48

約数和(自身を含む): 49803600

約数和(自身を除く): 28010140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 769, 1090, 1417, 1538, 2180, 2834, 3076, 3845, 5668, 7085, 7690, 9997, 14170, 15380, 19994, 28340, 39988, 49985, 83821, 99970, 167642, 199940, 335284, 419105, 838210, 1089673, 1676420, 2179346, 4358692, 5448365, 10896730, 21793460]

約数ペア:

[(1, 21793460), (2, 10896730), (4, 5448365), (5, 4358692), (10, 2179346), (13, 1676420), (20, 1089673), (26, 838210), (52, 419105), (65, 335284), (109, 199940), (130, 167642), (218, 99970), (260, 83821), (436, 49985), (545, 39988), (769, 28340), (1090, 19994), (1417, 15380), (1538, 14170), (2180, 9997), (2834, 7690), (3076, 7085), (3845, 5668)]