21273720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1049}}^1$

素因数の和:1089

約数の個数: 96

約数和(自身を含む): 69174000

約数和(自身を除く): 47900280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 169, 195, 260, 312, 338, 390, 507, 520, 676, 780, 845, 1014, 1049, 1352, 1560, 1690, 2028, 2098, 2535, 3147, 3380, 4056, 4196, 5070, 5245, 6294, 6760, 8392, 10140, 10490, 12588, 13637, 15735, 20280, 20980, 25176, 27274, 31470, 40911, 41960, 54548, 62940, 68185, 81822, 109096, 125880, 136370, 163644, 177281, 204555, 272740, 327288, 354562, 409110, 531843, 545480, 709124, 818220, 886405, 1063686, 1418248, 1636440, 1772810, 2127372, 2659215, 3545620, 4254744, 5318430, 7091240, 10636860, 21273720]

約数ペア:

[(1, 21273720), (2, 10636860), (3, 7091240), (4, 5318430), (5, 4254744), (6, 3545620), (8, 2659215), (10, 2127372), (12, 1772810), (13, 1636440), (15, 1418248), (20, 1063686), (24, 886405), (26, 818220), (30, 709124), (39, 545480), (40, 531843), (52, 409110), (60, 354562), (65, 327288), (78, 272740), (104, 204555), (120, 177281), (130, 163644), (156, 136370), (169, 125880), (195, 109096), (260, 81822), (312, 68185), (338, 62940), (390, 54548), (507, 41960), (520, 40911), (676, 31470), (780, 27274), (845, 25176), (1014, 20980), (1049, 20280), (1352, 15735), (1560, 13637), (1690, 12588), (2028, 10490), (2098, 10140), (2535, 8392), (3147, 6760), (3380, 6294), (4056, 5245), (4196, 5070)]