19943950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{503}}^1$

素因数の和:589

約数の個数: 48

約数和(自身を含む): 40684896

約数和(自身を除く): 20740946

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 61, 65, 122, 130, 305, 325, 503, 610, 650, 793, 1006, 1525, 1586, 2515, 3050, 3965, 5030, 6539, 7930, 12575, 13078, 19825, 25150, 30683, 32695, 39650, 61366, 65390, 153415, 163475, 306830, 326950, 398879, 767075, 797758, 1534150, 1994395, 3988790, 9971975, 19943950]

約数ペア:

[(1, 19943950), (2, 9971975), (5, 3988790), (10, 1994395), (13, 1534150), (25, 797758), (26, 767075), (50, 398879), (61, 326950), (65, 306830), (122, 163475), (130, 153415), (305, 65390), (325, 61366), (503, 39650), (610, 32695), (650, 30683), (793, 25150), (1006, 19825), (1525, 13078), (1586, 12575), (2515, 7930), (3050, 6539), (3965, 5030)]