618999940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1259}}^1$

素因数の和:1373

約数の個数: 96

約数和(自身を含む): 1469905920

約数和(自身を除く): 850905980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 61, 62, 65, 122, 124, 130, 155, 244, 260, 305, 310, 403, 610, 620, 793, 806, 1220, 1259, 1586, 1612, 1891, 2015, 2518, 3172, 3782, 3965, 4030, 5036, 6295, 7564, 7930, 8060, 9455, 12590, 15860, 16367, 18910, 24583, 25180, 32734, 37820, 39029, 49166, 65468, 76799, 78058, 81835, 98332, 122915, 153598, 156116, 163670, 195145, 245830, 307196, 327340, 383995, 390290, 491660, 507377, 767990, 780580, 998387, 1014754, 1535980, 1996774, 2029508, 2380769, 2536885, 3993548, 4761538, 4991935, 5073770, 9523076, 9983870, 10147540, 11903845, 19967740, 23807690, 30949997, 47615380, 61899994, 123799988, 154749985, 309499970, 618999940]

約数ペア:

[(1, 618999940), (2, 309499970), (4, 154749985), (5, 123799988), (10, 61899994), (13, 47615380), (20, 30949997), (26, 23807690), (31, 19967740), (52, 11903845), (61, 10147540), (62, 9983870), (65, 9523076), (122, 5073770), (124, 4991935), (130, 4761538), (155, 3993548), (244, 2536885), (260, 2380769), (305, 2029508), (310, 1996774), (403, 1535980), (610, 1014754), (620, 998387), (793, 780580), (806, 767990), (1220, 507377), (1259, 491660), (1586, 390290), (1612, 383995), (1891, 327340), (2015, 307196), (2518, 245830), (3172, 195145), (3782, 163670), (3965, 156116), (4030, 153598), (5036, 122915), (6295, 98332), (7564, 81835), (7930, 78058), (8060, 76799), (9455, 65468), (12590, 49166), (15860, 39029), (16367, 37820), (18910, 32734), (24583, 25180)]