20455260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{431}}^1$

素因数の和:563

約数の個数: 96

約数和(自身を含む): 66189312

約数和(自身を除く): 45734052

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 113, 140, 210, 226, 339, 420, 431, 452, 565, 678, 791, 862, 1130, 1293, 1356, 1582, 1695, 1724, 2155, 2260, 2373, 2586, 3017, 3164, 3390, 3955, 4310, 4746, 5172, 6034, 6465, 6780, 7910, 8620, 9051, 9492, 11865, 12068, 12930, 15085, 15820, 18102, 23730, 25860, 30170, 36204, 45255, 47460, 48703, 60340, 90510, 97406, 146109, 181020, 194812, 243515, 292218, 340921, 487030, 584436, 681842, 730545, 974060, 1022763, 1363684, 1461090, 1704605, 2045526, 2922180, 3409210, 4091052, 5113815, 6818420, 10227630, 20455260]

約数ペア:

[(1, 20455260), (2, 10227630), (3, 6818420), (4, 5113815), (5, 4091052), (6, 3409210), (7, 2922180), (10, 2045526), (12, 1704605), (14, 1461090), (15, 1363684), (20, 1022763), (21, 974060), (28, 730545), (30, 681842), (35, 584436), (42, 487030), (60, 340921), (70, 292218), (84, 243515), (105, 194812), (113, 181020), (140, 146109), (210, 97406), (226, 90510), (339, 60340), (420, 48703), (431, 47460), (452, 45255), (565, 36204), (678, 30170), (791, 25860), (862, 23730), (1130, 18102), (1293, 15820), (1356, 15085), (1582, 12930), (1695, 12068), (1724, 11865), (2155, 9492), (2260, 9051), (2373, 8620), (2586, 7910), (3017, 6780), (3164, 6465), (3390, 6034), (3955, 5172), (4310, 4746)]