21498360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13781}}^1$

素因数の和:13808

約数の個数: 64

約数和(自身を含む): 69461280

約数和(自身を除く): 47962920

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, 195, 260, 312, 390, 520, 780, 1560, 13781, 27562, 41343, 55124, 68905, 82686, 110248, 137810, 165372, 179153, 206715, 275620, 330744, 358306, 413430, 537459, 551240, 716612, 826860, 895765, 1074918, 1433224, 1653720, 1791530, 2149836, 2687295, 3583060, 4299672, 5374590, 7166120, 10749180, 21498360]

約数ペア:

[(1, 21498360), (2, 10749180), (3, 7166120), (4, 5374590), (5, 4299672), (6, 3583060), (8, 2687295), (10, 2149836), (12, 1791530), (13, 1653720), (15, 1433224), (20, 1074918), (24, 895765), (26, 826860), (30, 716612), (39, 551240), (40, 537459), (52, 413430), (60, 358306), (65, 330744), (78, 275620), (104, 206715), (120, 179153), (130, 165372), (156, 137810), (195, 110248), (260, 82686), (312, 68905), (390, 55124), (520, 41343), (780, 27562), (1560, 13781)]