21140964

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:449

約数の個数: 72

約数和(自身を含む): 58094400

約数和(自身を除く): 36953436

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 199, 227, 234, 398, 454, 468, 597, 681, 796, 908, 1194, 1362, 1791, 2043, 2388, 2587, 2724, 2951, 3582, 4086, 5174, 5902, 7164, 7761, 8172, 8853, 10348, 11804, 15522, 17706, 23283, 26559, 31044, 35412, 45173, 46566, 53118, 90346, 93132, 106236, 135519, 180692, 271038, 406557, 542076, 587249, 813114, 1174498, 1626228, 1761747, 2348996, 3523494, 5285241, 7046988, 10570482, 21140964]

約数ペア:

[(1, 21140964), (2, 10570482), (3, 7046988), (4, 5285241), (6, 3523494), (9, 2348996), (12, 1761747), (13, 1626228), (18, 1174498), (26, 813114), (36, 587249), (39, 542076), (52, 406557), (78, 271038), (117, 180692), (156, 135519), (199, 106236), (227, 93132), (234, 90346), (398, 53118), (454, 46566), (468, 45173), (597, 35412), (681, 31044), (796, 26559), (908, 23283), (1194, 17706), (1362, 15522), (1791, 11804), (2043, 10348), (2388, 8853), (2587, 8172), (2724, 7761), (2951, 7164), (3582, 5902), (4086, 5174)]