21107268

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1$

素因数の和:426

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 48606012

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 17, 18, 21, 26, 28, 34, 36, 39, 42, 51, 52, 63, 68, 78, 84, 91, 102, 117, 119, 126, 153, 156, 182, 204, 221, 234, 238, 252, 273, 306, 357, 364, 379, 442, 468, 476, 546, 612, 663, 714, 758, 819, 884, 1071, 1092, 1137, 1326, 1428, 1516, 1547, 1638, 1989, 2142, 2274, 2652, 2653, 3094, 3276, 3411, 3978, 4284, 4548, 4641, 4927, 5306, 6188, 6443, 6822, 7956, 7959, 9282, 9854, 10612, 12886, 13644, 13923, 14781, 15918, 18564, 19329, 19708, 23877, 25772, 27846, 29562, 31836, 34489, 38658, 44343, 45101, 47754, 55692, 57987, 59124, 68978, 77316, 83759, 88686, 90202, 95508, 103467, 115974, 135303, 137956, 167518, 177372, 180404, 206934, 231948, 251277, 270606, 310401, 335036, 405909, 413868, 502554, 541212, 586313, 620802, 753831, 811818, 1005108, 1172626, 1241604, 1507662, 1623636, 1758939, 2345252, 3015324, 3517878, 5276817, 7035756, 10553634, 21107268]

約数ペア:

[(1, 21107268), (2, 10553634), (3, 7035756), (4, 5276817), (6, 3517878), (7, 3015324), (9, 2345252), (12, 1758939), (13, 1623636), (14, 1507662), (17, 1241604), (18, 1172626), (21, 1005108), (26, 811818), (28, 753831), (34, 620802), (36, 586313), (39, 541212), (42, 502554), (51, 413868), (52, 405909), (63, 335036), (68, 310401), (78, 270606), (84, 251277), (91, 231948), (102, 206934), (117, 180404), (119, 177372), (126, 167518), (153, 137956), (156, 135303), (182, 115974), (204, 103467), (221, 95508), (234, 90202), (238, 88686), (252, 83759), (273, 77316), (306, 68978), (357, 59124), (364, 57987), (379, 55692), (442, 47754), (468, 45101), (476, 44343), (546, 38658), (612, 34489), (663, 31836), (714, 29562), (758, 27846), (819, 25772), (884, 23877), (1071, 19708), (1092, 19329), (1137, 18564), (1326, 15918), (1428, 14781), (1516, 13923), (1547, 13644), (1638, 12886), (1989, 10612), (2142, 9854), (2274, 9282), (2652, 7959), (2653, 7956), (3094, 6822), (3276, 6443), (3411, 6188), (3978, 5306), (4284, 4927), (4548, 4641)]