640759920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157049}}^1$

素因数の和:157082

約数の個数: 80

約数和(自身を含む): 2103213600

約数和(自身を除く): 1462453680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 157049, 314098, 471147, 628196, 785245, 942294, 1256392, 1570490, 1884588, 2355735, 2512784, 2669833, 3140980, 3769176, 4711470, 5339666, 6281960, 7538352, 8009499, 9422940, 10679332, 12563920, 13349165, 16018998, 18845880, 21358664, 26698330, 32037996, 37691760, 40047495, 42717328, 53396660, 64075992, 80094990, 106793320, 128151984, 160189980, 213586640, 320379960, 640759920]

約数ペア:

[(1, 640759920), (2, 320379960), (3, 213586640), (4, 160189980), (5, 128151984), (6, 106793320), (8, 80094990), (10, 64075992), (12, 53396660), (15, 42717328), (16, 40047495), (17, 37691760), (20, 32037996), (24, 26698330), (30, 21358664), (34, 18845880), (40, 16018998), (48, 13349165), (51, 12563920), (60, 10679332), (68, 9422940), (80, 8009499), (85, 7538352), (102, 6281960), (120, 5339666), (136, 4711470), (170, 3769176), (204, 3140980), (240, 2669833), (255, 2512784), (272, 2355735), (340, 1884588), (408, 1570490), (510, 1256392), (680, 942294), (816, 785245), (1020, 628196), (1360, 471147), (2040, 314098), (4080, 157049)]