819808640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5903}}^1$

素因数の和:5960

約数の個数: 128

約数和(自身を含む): 2312478720

約数和(自身を除く): 1492670080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 640, 868, 896, 992, 1085, 1120, 1240, 1736, 1984, 2170, 2240, 2480, 3472, 3968, 4340, 4480, 4960, 5903, 6944, 8680, 9920, 11806, 13888, 17360, 19840, 23612, 27776, 29515, 34720, 41321, 47224, 59030, 69440, 82642, 94448, 118060, 138880, 165284, 182993, 188896, 206605, 236120, 330568, 365986, 377792, 413210, 472240, 661136, 731972, 755584, 826420, 914965, 944480, 1280951, 1322272, 1463944, 1652840, 1829930, 1888960, 2561902, 2644544, 2927888, 3305680, 3659860, 3777920, 5123804, 5289088, 5855776, 6404755, 6611360, 7319720, 10247608, 11711552, 12809510, 13222720, 14639440, 20495216, 23423104, 25619020, 26445440, 29278880, 40990432, 51238040, 58557760, 81980864, 102476080, 117115520, 163961728, 204952160, 409904320, 819808640]

約数ペア:

[(1, 819808640), (2, 409904320), (4, 204952160), (5, 163961728), (7, 117115520), (8, 102476080), (10, 81980864), (14, 58557760), (16, 51238040), (20, 40990432), (28, 29278880), (31, 26445440), (32, 25619020), (35, 23423104), (40, 20495216), (56, 14639440), (62, 13222720), (64, 12809510), (70, 11711552), (80, 10247608), (112, 7319720), (124, 6611360), (128, 6404755), (140, 5855776), (155, 5289088), (160, 5123804), (217, 3777920), (224, 3659860), (248, 3305680), (280, 2927888), (310, 2644544), (320, 2561902), (434, 1888960), (448, 1829930), (496, 1652840), (560, 1463944), (620, 1322272), (640, 1280951), (868, 944480), (896, 914965), (992, 826420), (1085, 755584), (1120, 731972), (1240, 661136), (1736, 472240), (1984, 413210), (2170, 377792), (2240, 365986), (2480, 330568), (3472, 236120), (3968, 206605), (4340, 188896), (4480, 182993), (4960, 165284), (5903, 138880), (6944, 118060), (8680, 94448), (9920, 82642), (11806, 69440), (13888, 59030), (17360, 47224), (19840, 41321), (23612, 34720), (27776, 29515)]