21381630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{277}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 53803008

約数和(自身を除く): 32421378

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 83, 93, 155, 166, 186, 249, 277, 310, 415, 465, 498, 554, 830, 831, 930, 1245, 1385, 1662, 2490, 2573, 2770, 4155, 5146, 7719, 8310, 8587, 12865, 15438, 17174, 22991, 25730, 25761, 38595, 42935, 45982, 51522, 68973, 77190, 85870, 114955, 128805, 137946, 229910, 257610, 344865, 689730, 712721, 1425442, 2138163, 3563605, 4276326, 7127210, 10690815, 21381630]

約数ペア:

[(1, 21381630), (2, 10690815), (3, 7127210), (5, 4276326), (6, 3563605), (10, 2138163), (15, 1425442), (30, 712721), (31, 689730), (62, 344865), (83, 257610), (93, 229910), (155, 137946), (166, 128805), (186, 114955), (249, 85870), (277, 77190), (310, 68973), (415, 51522), (465, 45982), (498, 42935), (554, 38595), (830, 25761), (831, 25730), (930, 22991), (1245, 17174), (1385, 15438), (1662, 12865), (2490, 8587), (2573, 8310), (2770, 7719), (4155, 5146)]