204328280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20681}}^1$

素因数の和:20724

約数の個数: 64

約数和(自身を含む): 521186400

約数和(自身を除く): 316858120

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 9880, 20681, 41362, 82724, 103405, 165448, 206810, 268853, 392939, 413620, 537706, 785878, 827240, 1075412, 1344265, 1571756, 1964695, 2150824, 2688530, 3143512, 3929390, 5108207, 5377060, 7858780, 10216414, 10754120, 15717560, 20432828, 25541035, 40865656, 51082070, 102164140, 204328280]

約数ペア:

[(1, 204328280), (2, 102164140), (4, 51082070), (5, 40865656), (8, 25541035), (10, 20432828), (13, 15717560), (19, 10754120), (20, 10216414), (26, 7858780), (38, 5377060), (40, 5108207), (52, 3929390), (65, 3143512), (76, 2688530), (95, 2150824), (104, 1964695), (130, 1571756), (152, 1344265), (190, 1075412), (247, 827240), (260, 785878), (380, 537706), (494, 413620), (520, 392939), (760, 268853), (988, 206810), (1235, 165448), (1976, 103405), (2470, 82724), (4940, 41362), (9880, 20681)]