19945250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:85

約数の個数: 96

約数和(自身を含む): 44933616

約数和(自身を除く): 24988366

約数列:

[1, 2, 5, 10, 13, 17, 19, 25, 26, 34, 38, 50, 65, 85, 95, 125, 130, 170, 190, 221, 247, 250, 323, 325, 361, 425, 442, 475, 494, 646, 650, 722, 850, 950, 1105, 1235, 1615, 1625, 1805, 2125, 2210, 2375, 2470, 3230, 3250, 3610, 4199, 4250, 4693, 4750, 5525, 6137, 6175, 8075, 8398, 9025, 9386, 11050, 12274, 12350, 16150, 18050, 20995, 23465, 27625, 30685, 30875, 40375, 41990, 45125, 46930, 55250, 61370, 61750, 79781, 80750, 90250, 104975, 117325, 153425, 159562, 209950, 234650, 306850, 398905, 524875, 586625, 767125, 797810, 1049750, 1173250, 1534250, 1994525, 3989050, 9972625, 19945250]

約数ペア:

[(1, 19945250), (2, 9972625), (5, 3989050), (10, 1994525), (13, 1534250), (17, 1173250), (19, 1049750), (25, 797810), (26, 767125), (34, 586625), (38, 524875), (50, 398905), (65, 306850), (85, 234650), (95, 209950), (125, 159562), (130, 153425), (170, 117325), (190, 104975), (221, 90250), (247, 80750), (250, 79781), (323, 61750), (325, 61370), (361, 55250), (425, 46930), (442, 45125), (475, 41990), (494, 40375), (646, 30875), (650, 30685), (722, 27625), (850, 23465), (950, 20995), (1105, 18050), (1235, 16150), (1615, 12350), (1625, 12274), (1805, 11050), (2125, 9386), (2210, 9025), (2375, 8398), (2470, 8075), (3230, 6175), (3250, 6137), (3610, 5525), (4199, 4750), (4250, 4693)]