199998375

素因数分解:

$3^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 347043840

約数和(自身を除く): 147045465

約数列:

[1, 3, 5, 15, 25, 43, 75, 79, 125, 129, 157, 215, 237, 375, 395, 471, 645, 785, 1075, 1185, 1975, 2355, 3225, 3397, 3925, 5375, 5925, 6751, 9875, 10191, 11775, 12403, 16125, 16985, 19625, 20253, 29625, 33755, 37209, 50955, 58875, 62015, 84925, 101265, 168775, 186045, 254775, 310075, 424625, 506325, 533329, 843875, 930225, 1273875, 1550375, 1599987, 2531625, 2666645, 4651125, 7999935, 13333225, 39999675, 66666125, 199998375]

約数ペア:

[(1, 199998375), (3, 66666125), (5, 39999675), (15, 13333225), (25, 7999935), (43, 4651125), (75, 2666645), (79, 2531625), (125, 1599987), (129, 1550375), (157, 1273875), (215, 930225), (237, 843875), (375, 533329), (395, 506325), (471, 424625), (645, 310075), (785, 254775), (1075, 186045), (1185, 168775), (1975, 101265), (2355, 84925), (3225, 62015), (3397, 58875), (3925, 50955), (5375, 37209), (5925, 33755), (6751, 29625), (9875, 20253), (10191, 19625), (11775, 16985), (12403, 16125)]