20148400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{2963}}^1$

素因数の和:2998

約数の個数: 60

約数和(自身を含む): 51271272

約数和(自身を除く): 31122872

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 340, 400, 425, 680, 850, 1360, 1700, 2963, 3400, 5926, 6800, 11852, 14815, 23704, 29630, 47408, 50371, 59260, 74075, 100742, 118520, 148150, 201484, 237040, 251855, 296300, 402968, 503710, 592600, 805936, 1007420, 1185200, 1259275, 2014840, 2518550, 4029680, 5037100, 10074200, 20148400]

約数ペア:

[(1, 20148400), (2, 10074200), (4, 5037100), (5, 4029680), (8, 2518550), (10, 2014840), (16, 1259275), (17, 1185200), (20, 1007420), (25, 805936), (34, 592600), (40, 503710), (50, 402968), (68, 296300), (80, 251855), (85, 237040), (100, 201484), (136, 148150), (170, 118520), (200, 100742), (272, 74075), (340, 59260), (400, 50371), (425, 47408), (680, 29630), (850, 23704), (1360, 14815), (1700, 11852), (2963, 6800), (3400, 5926)]