287404520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{1259}}^1$

素因数の和:1722

約数の個数: 64

約数和(自身を含む): 698544000

約数和(自身を除く): 411139480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 439, 520, 878, 1259, 1756, 2195, 2518, 3512, 4390, 5036, 5707, 6295, 8780, 10072, 11414, 12590, 16367, 17560, 22828, 25180, 28535, 32734, 45656, 50360, 57070, 65468, 81835, 114140, 130936, 163670, 228280, 327340, 552701, 654680, 1105402, 2210804, 2763505, 4421608, 5527010, 7185113, 11054020, 14370226, 22108040, 28740452, 35925565, 57480904, 71851130, 143702260, 287404520]

約数ペア:

[(1, 287404520), (2, 143702260), (4, 71851130), (5, 57480904), (8, 35925565), (10, 28740452), (13, 22108040), (20, 14370226), (26, 11054020), (40, 7185113), (52, 5527010), (65, 4421608), (104, 2763505), (130, 2210804), (260, 1105402), (439, 654680), (520, 552701), (878, 327340), (1259, 228280), (1756, 163670), (2195, 130936), (2518, 114140), (3512, 81835), (4390, 65468), (5036, 57070), (5707, 50360), (6295, 45656), (8780, 32734), (10072, 28535), (11414, 25180), (12590, 22828), (16367, 17560)]