20984580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1597}}^1$

素因数の和:1685

約数の個数: 72

約数和(自身を含む): 64565592

約数和(自身を除く): 43581012

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1597, 2190, 2628, 3194, 3285, 4380, 4791, 6388, 6570, 7985, 9582, 13140, 14373, 15970, 19164, 23955, 28746, 31940, 47910, 57492, 71865, 95820, 116581, 143730, 233162, 287460, 349743, 466324, 582905, 699486, 1049229, 1165810, 1398972, 1748715, 2098458, 2331620, 3497430, 4196916, 5246145, 6994860, 10492290, 20984580]

約数ペア:

[(1, 20984580), (2, 10492290), (3, 6994860), (4, 5246145), (5, 4196916), (6, 3497430), (9, 2331620), (10, 2098458), (12, 1748715), (15, 1398972), (18, 1165810), (20, 1049229), (30, 699486), (36, 582905), (45, 466324), (60, 349743), (73, 287460), (90, 233162), (146, 143730), (180, 116581), (219, 95820), (292, 71865), (365, 57492), (438, 47910), (657, 31940), (730, 28746), (876, 23955), (1095, 19164), (1314, 15970), (1460, 14373), (1597, 13140), (2190, 9582), (2628, 7985), (3194, 6570), (3285, 6388), (4380, 4791)]