21319360

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3919}}^1$

素因数の和:3953

約数の個数: 56

約数和(自身を含む): 53766720

約数和(自身を除く): 32447360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3919, 5440, 7838, 15676, 19595, 31352, 39190, 62704, 66623, 78380, 125408, 133246, 156760, 250816, 266492, 313520, 333115, 532984, 627040, 666230, 1065968, 1254080, 1332460, 2131936, 2664920, 4263872, 5329840, 10659680, 21319360]

約数ペア:

[(1, 21319360), (2, 10659680), (4, 5329840), (5, 4263872), (8, 2664920), (10, 2131936), (16, 1332460), (17, 1254080), (20, 1065968), (32, 666230), (34, 627040), (40, 532984), (64, 333115), (68, 313520), (80, 266492), (85, 250816), (136, 156760), (160, 133246), (170, 125408), (272, 78380), (320, 66623), (340, 62704), (544, 39190), (680, 31352), (1088, 19595), (1360, 15676), (2720, 7838), (3919, 5440)]