21155004

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2659}}^1$

素因数の和:2699

約数の個数: 72

約数和(自身を含む): 60999120

約数和(自身を除く): 39844116

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 2659, 3978, 5318, 7956, 7977, 10636, 15954, 23931, 31908, 34567, 45203, 47862, 69134, 90406, 95724, 103701, 135609, 138268, 180812, 207402, 271218, 311103, 406827, 414804, 542436, 587639, 622206, 813654, 1175278, 1244412, 1627308, 1762917, 2350556, 3525834, 5288751, 7051668, 10577502, 21155004]

約数ペア:

[(1, 21155004), (2, 10577502), (3, 7051668), (4, 5288751), (6, 3525834), (9, 2350556), (12, 1762917), (13, 1627308), (17, 1244412), (18, 1175278), (26, 813654), (34, 622206), (36, 587639), (39, 542436), (51, 414804), (52, 406827), (68, 311103), (78, 271218), (102, 207402), (117, 180812), (153, 138268), (156, 135609), (204, 103701), (221, 95724), (234, 90406), (306, 69134), (442, 47862), (468, 45203), (612, 34567), (663, 31908), (884, 23931), (1326, 15954), (1989, 10636), (2652, 7977), (2659, 7956), (3978, 5318)]