15991900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:463

約数の個数: 72

約数和(自身を含む): 38435040

約数和(自身を除く): 22443140

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 25, 34, 46, 50, 68, 85, 92, 100, 115, 170, 230, 340, 391, 409, 425, 460, 575, 782, 818, 850, 1150, 1564, 1636, 1700, 1955, 2045, 2300, 3910, 4090, 6953, 7820, 8180, 9407, 9775, 10225, 13906, 18814, 19550, 20450, 27812, 34765, 37628, 39100, 40900, 47035, 69530, 94070, 139060, 159919, 173825, 188140, 235175, 319838, 347650, 470350, 639676, 695300, 799595, 940700, 1599190, 3198380, 3997975, 7995950, 15991900]

約数ペア:

[(1, 15991900), (2, 7995950), (4, 3997975), (5, 3198380), (10, 1599190), (17, 940700), (20, 799595), (23, 695300), (25, 639676), (34, 470350), (46, 347650), (50, 319838), (68, 235175), (85, 188140), (92, 173825), (100, 159919), (115, 139060), (170, 94070), (230, 69530), (340, 47035), (391, 40900), (409, 39100), (425, 37628), (460, 34765), (575, 27812), (782, 20450), (818, 19550), (850, 18814), (1150, 13906), (1564, 10225), (1636, 9775), (1700, 9407), (1955, 8180), (2045, 7820), (2300, 6953), (3910, 4090)]