20408040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{683}}^1$

素因数の和:783

約数の個数: 96

約数和(自身を含む): 67223520

約数和(自身を除く): 46815480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 83, 90, 120, 166, 180, 249, 332, 360, 415, 498, 664, 683, 747, 830, 996, 1245, 1366, 1494, 1660, 1992, 2049, 2490, 2732, 2988, 3320, 3415, 3735, 4098, 4980, 5464, 5976, 6147, 6830, 7470, 8196, 9960, 10245, 12294, 13660, 14940, 16392, 20490, 24588, 27320, 29880, 30735, 40980, 49176, 56689, 61470, 81960, 113378, 122940, 170067, 226756, 245880, 283445, 340134, 453512, 510201, 566890, 680268, 850335, 1020402, 1133780, 1360536, 1700670, 2040804, 2267560, 2551005, 3401340, 4081608, 5102010, 6802680, 10204020, 20408040]

約数ペア:

[(1, 20408040), (2, 10204020), (3, 6802680), (4, 5102010), (5, 4081608), (6, 3401340), (8, 2551005), (9, 2267560), (10, 2040804), (12, 1700670), (15, 1360536), (18, 1133780), (20, 1020402), (24, 850335), (30, 680268), (36, 566890), (40, 510201), (45, 453512), (60, 340134), (72, 283445), (83, 245880), (90, 226756), (120, 170067), (166, 122940), (180, 113378), (249, 81960), (332, 61470), (360, 56689), (415, 49176), (498, 40980), (664, 30735), (683, 29880), (747, 27320), (830, 24588), (996, 20490), (1245, 16392), (1366, 14940), (1494, 13660), (1660, 12294), (1992, 10245), (2049, 9960), (2490, 8196), (2732, 7470), (2988, 6830), (3320, 6147), (3415, 5976), (3735, 5464), (4098, 4980)]