1980805760

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{99839}}^1$

素因数の和:99889

約数の個数: 64

約数和(自身を含む): 4888166400

約数和(自身を除く): 2907360640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19840, 99839, 199678, 399356, 499195, 798712, 998390, 1597424, 1996780, 3095009, 3194848, 3993560, 6190018, 6389696, 7987120, 12380036, 12779392, 15475045, 15974240, 24760072, 30950090, 31948480, 49520144, 61900180, 63896960, 99040288, 123800360, 198080576, 247600720, 396161152, 495201440, 990402880, 1980805760]

約数ペア:

[(1, 1980805760), (2, 990402880), (4, 495201440), (5, 396161152), (8, 247600720), (10, 198080576), (16, 123800360), (20, 99040288), (31, 63896960), (32, 61900180), (40, 49520144), (62, 31948480), (64, 30950090), (80, 24760072), (124, 15974240), (128, 15475045), (155, 12779392), (160, 12380036), (248, 7987120), (310, 6389696), (320, 6190018), (496, 3993560), (620, 3194848), (640, 3095009), (992, 1996780), (1240, 1597424), (1984, 998390), (2480, 798712), (3968, 499195), (4960, 399356), (9920, 199678), (19840, 99839)]