31385120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:298

約数の個数: 96

約数和(自身を含む): 81285120

約数和(自身を除く): 49900000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 79, 80, 104, 130, 158, 160, 191, 208, 260, 316, 382, 395, 416, 520, 632, 764, 790, 955, 1027, 1040, 1264, 1528, 1580, 1910, 2054, 2080, 2483, 2528, 3056, 3160, 3820, 4108, 4966, 5135, 6112, 6320, 7640, 8216, 9932, 10270, 12415, 12640, 15089, 15280, 16432, 19864, 20540, 24830, 30178, 30560, 32864, 39728, 41080, 49660, 60356, 75445, 79456, 82160, 99320, 120712, 150890, 164320, 196157, 198640, 241424, 301780, 392314, 397280, 482848, 603560, 784628, 980785, 1207120, 1569256, 1961570, 2414240, 3138512, 3923140, 6277024, 7846280, 15692560, 31385120]

約数ペア:

[(1, 31385120), (2, 15692560), (4, 7846280), (5, 6277024), (8, 3923140), (10, 3138512), (13, 2414240), (16, 1961570), (20, 1569256), (26, 1207120), (32, 980785), (40, 784628), (52, 603560), (65, 482848), (79, 397280), (80, 392314), (104, 301780), (130, 241424), (158, 198640), (160, 196157), (191, 164320), (208, 150890), (260, 120712), (316, 99320), (382, 82160), (395, 79456), (416, 75445), (520, 60356), (632, 49660), (764, 41080), (790, 39728), (955, 32864), (1027, 30560), (1040, 30178), (1264, 24830), (1528, 20540), (1580, 19864), (1910, 16432), (2054, 15280), (2080, 15089), (2483, 12640), (2528, 12415), (3056, 10270), (3160, 9932), (3820, 8216), (4108, 7640), (4966, 6320), (5135, 6112)]