1989890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:183

約数の個数: 48

約数和(自身を含む): 4333824

約数和(自身を除く): 2343934

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 49, 62, 70, 98, 131, 155, 217, 245, 262, 310, 434, 490, 655, 917, 1085, 1310, 1519, 1834, 2170, 3038, 4061, 4585, 6419, 7595, 8122, 9170, 12838, 15190, 20305, 28427, 32095, 40610, 56854, 64190, 142135, 198989, 284270, 397978, 994945, 1989890]

約数ペア:

[(1, 1989890), (2, 994945), (5, 397978), (7, 284270), (10, 198989), (14, 142135), (31, 64190), (35, 56854), (49, 40610), (62, 32095), (70, 28427), (98, 20305), (131, 15190), (155, 12838), (217, 9170), (245, 8122), (262, 7595), (310, 6419), (434, 4585), (490, 4061), (655, 3038), (917, 2170), (1085, 1834), (1310, 1519)]