821760772

素因数分解:

$2^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{139}}^2$

素因数の和:334

約数の個数: 72

約数和(自身を含む): 1743705600

約数和(自身を除く): 921944828

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 139, 196, 217, 278, 343, 434, 556, 686, 868, 973, 1372, 1519, 1946, 3038, 3892, 4309, 6076, 6811, 8618, 10633, 13622, 17236, 19321, 21266, 27244, 30163, 38642, 42532, 47677, 60326, 77284, 95354, 120652, 135247, 190708, 211141, 270494, 422282, 540988, 598951, 844564, 946729, 1197902, 1477987, 1893458, 2395804, 2955974, 3786916, 4192657, 5911948, 6627103, 8385314, 13254206, 16770628, 26508412, 29348599, 58697198, 117394396, 205440193, 410880386, 821760772]

約数ペア:

[(1, 821760772), (2, 410880386), (4, 205440193), (7, 117394396), (14, 58697198), (28, 29348599), (31, 26508412), (49, 16770628), (62, 13254206), (98, 8385314), (124, 6627103), (139, 5911948), (196, 4192657), (217, 3786916), (278, 2955974), (343, 2395804), (434, 1893458), (556, 1477987), (686, 1197902), (868, 946729), (973, 844564), (1372, 598951), (1519, 540988), (1946, 422282), (3038, 270494), (3892, 211141), (4309, 190708), (6076, 135247), (6811, 120652), (8618, 95354), (10633, 77284), (13622, 60326), (17236, 47677), (19321, 42532), (21266, 38642), (27244, 30163)]