25204880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:504

約数の個数: 80

約数和(自身を含む): 63638784

約数和(自身を除く): 38433904

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 43, 68, 80, 85, 86, 136, 170, 172, 215, 272, 340, 344, 430, 431, 680, 688, 731, 860, 862, 1360, 1462, 1720, 1724, 2155, 2924, 3440, 3448, 3655, 4310, 5848, 6896, 7310, 7327, 8620, 11696, 14620, 14654, 17240, 18533, 29240, 29308, 34480, 36635, 37066, 58480, 58616, 73270, 74132, 92665, 117232, 146540, 148264, 185330, 293080, 296528, 315061, 370660, 586160, 630122, 741320, 1260244, 1482640, 1575305, 2520488, 3150610, 5040976, 6301220, 12602440, 25204880]

約数ペア:

[(1, 25204880), (2, 12602440), (4, 6301220), (5, 5040976), (8, 3150610), (10, 2520488), (16, 1575305), (17, 1482640), (20, 1260244), (34, 741320), (40, 630122), (43, 586160), (68, 370660), (80, 315061), (85, 296528), (86, 293080), (136, 185330), (170, 148264), (172, 146540), (215, 117232), (272, 92665), (340, 74132), (344, 73270), (430, 58616), (431, 58480), (680, 37066), (688, 36635), (731, 34480), (860, 29308), (862, 29240), (1360, 18533), (1462, 17240), (1720, 14654), (1724, 14620), (2155, 11696), (2924, 8620), (3440, 7327), (3448, 7310), (3655, 6896), (4310, 5848)]