20696520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13267}}^1$

素因数の和:13294

約数の個数: 64

約数和(自身を含む): 66870720

約数和(自身を除く): 46174200

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, 13267, 26534, 39801, 53068, 66335, 79602, 106136, 132670, 159204, 172471, 199005, 265340, 318408, 344942, 398010, 517413, 530680, 689884, 796020, 862355, 1034826, 1379768, 1592040, 1724710, 2069652, 2587065, 3449420, 4139304, 5174130, 6898840, 10348260, 20696520]

約数ペア:

[(1, 20696520), (2, 10348260), (3, 6898840), (4, 5174130), (5, 4139304), (6, 3449420), (8, 2587065), (10, 2069652), (12, 1724710), (13, 1592040), (15, 1379768), (20, 1034826), (24, 862355), (26, 796020), (30, 689884), (39, 530680), (40, 517413), (52, 398010), (60, 344942), (65, 318408), (78, 265340), (104, 199005), (120, 172471), (130, 159204), (156, 132670), (195, 106136), (260, 79602), (312, 66335), (390, 53068), (520, 39801), (780, 26534), (1560, 13267)]