257195890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{9397}}^1$

素因数の和:9451

約数の個数: 64

約数和(自身を含む): 584630784

約数和(自身を除く): 327434894

約数列:

[1, 2, 5, 7, 10, 14, 17, 23, 34, 35, 46, 70, 85, 115, 119, 161, 170, 230, 238, 322, 391, 595, 782, 805, 1190, 1610, 1955, 2737, 3910, 5474, 9397, 13685, 18794, 27370, 46985, 65779, 93970, 131558, 159749, 216131, 319498, 328895, 432262, 657790, 798745, 1080655, 1118243, 1512917, 1597490, 2161310, 2236486, 3025834, 3674227, 5591215, 7348454, 7564585, 11182430, 15129170, 18371135, 25719589, 36742270, 51439178, 128597945, 257195890]

約数ペア:

[(1, 257195890), (2, 128597945), (5, 51439178), (7, 36742270), (10, 25719589), (14, 18371135), (17, 15129170), (23, 11182430), (34, 7564585), (35, 7348454), (46, 5591215), (70, 3674227), (85, 3025834), (115, 2236486), (119, 2161310), (161, 1597490), (170, 1512917), (230, 1118243), (238, 1080655), (322, 798745), (391, 657790), (595, 432262), (782, 328895), (805, 319498), (1190, 216131), (1610, 159749), (1955, 131558), (2737, 93970), (3910, 65779), (5474, 46985), (9397, 27370), (13685, 18794)]