20821112

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 45511200

約数和(自身を除く): 24690088

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 41, 52, 76, 82, 104, 152, 164, 247, 257, 328, 494, 514, 533, 779, 988, 1028, 1066, 1558, 1976, 2056, 2132, 3116, 3341, 4264, 4883, 6232, 6682, 9766, 10127, 10537, 13364, 19532, 20254, 21074, 26728, 39064, 40508, 42148, 63479, 81016, 84296, 126958, 136981, 200203, 253916, 273962, 400406, 507832, 547924, 800812, 1095848, 1601624, 2602639, 5205278, 10410556, 20821112]

約数ペア:

[(1, 20821112), (2, 10410556), (4, 5205278), (8, 2602639), (13, 1601624), (19, 1095848), (26, 800812), (38, 547924), (41, 507832), (52, 400406), (76, 273962), (82, 253916), (104, 200203), (152, 136981), (164, 126958), (247, 84296), (257, 81016), (328, 63479), (494, 42148), (514, 40508), (533, 39064), (779, 26728), (988, 21074), (1028, 20254), (1066, 19532), (1558, 13364), (1976, 10537), (2056, 10127), (2132, 9766), (3116, 6682), (3341, 6232), (4264, 4883)]