20293840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:225

約数の個数: 120

約数和(自身を含む): 56996352

約数和(自身を除く): 36702512

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 167, 196, 217, 245, 248, 280, 310, 334, 392, 434, 490, 496, 560, 620, 668, 784, 835, 868, 980, 1085, 1169, 1240, 1336, 1519, 1670, 1736, 1960, 2170, 2338, 2480, 2672, 3038, 3340, 3472, 3920, 4340, 4676, 5177, 5845, 6076, 6680, 7595, 8183, 8680, 9352, 10354, 11690, 12152, 13360, 15190, 16366, 17360, 18704, 20708, 23380, 24304, 25885, 30380, 32732, 36239, 40915, 41416, 46760, 51770, 60760, 65464, 72478, 81830, 82832, 93520, 103540, 121520, 130928, 144956, 163660, 181195, 207080, 253673, 289912, 327320, 362390, 414160, 507346, 579824, 654640, 724780, 1014692, 1268365, 1449560, 2029384, 2536730, 2899120, 4058768, 5073460, 10146920, 20293840]

約数ペア:

[(1, 20293840), (2, 10146920), (4, 5073460), (5, 4058768), (7, 2899120), (8, 2536730), (10, 2029384), (14, 1449560), (16, 1268365), (20, 1014692), (28, 724780), (31, 654640), (35, 579824), (40, 507346), (49, 414160), (56, 362390), (62, 327320), (70, 289912), (80, 253673), (98, 207080), (112, 181195), (124, 163660), (140, 144956), (155, 130928), (167, 121520), (196, 103540), (217, 93520), (245, 82832), (248, 81830), (280, 72478), (310, 65464), (334, 60760), (392, 51770), (434, 46760), (490, 41416), (496, 40915), (560, 36239), (620, 32732), (668, 30380), (784, 25885), (835, 24304), (868, 23380), (980, 20708), (1085, 18704), (1169, 17360), (1240, 16366), (1336, 15190), (1519, 13360), (1670, 12152), (1736, 11690), (1960, 10354), (2170, 9352), (2338, 8680), (2480, 8183), (2672, 7595), (3038, 6680), (3340, 6076), (3472, 5845), (3920, 5177), (4340, 4676)]