21898760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1831}}^1$

素因数の和:1878

約数の個数: 64

約数和(自身を含む): 55399680

約数和(自身を除く): 33500920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1831, 2392, 2990, 3662, 5980, 7324, 9155, 11960, 14648, 18310, 23803, 36620, 42113, 47606, 73240, 84226, 95212, 119015, 168452, 190424, 210565, 238030, 336904, 421130, 476060, 547469, 842260, 952120, 1094938, 1684520, 2189876, 2737345, 4379752, 5474690, 10949380, 21898760]

約数ペア:

[(1, 21898760), (2, 10949380), (4, 5474690), (5, 4379752), (8, 2737345), (10, 2189876), (13, 1684520), (20, 1094938), (23, 952120), (26, 842260), (40, 547469), (46, 476060), (52, 421130), (65, 336904), (92, 238030), (104, 210565), (115, 190424), (130, 168452), (184, 119015), (230, 95212), (260, 84226), (299, 73240), (460, 47606), (520, 42113), (598, 36620), (920, 23803), (1196, 18310), (1495, 14648), (1831, 11960), (2392, 9155), (2990, 7324), (3662, 5980)]