19977804

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7207}}^1$

素因数の和:7235

約数の個数: 72

約数和(自身を含む): 62969088

約数和(自身を除く): 42991284

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7207, 14414, 21621, 28828, 43242, 50449, 64863, 79277, 86484, 100898, 129726, 151347, 158554, 201796, 237831, 259452, 302694, 317108, 454041, 475662, 554939, 605388, 713493, 908082, 951324, 1109878, 1426986, 1664817, 1816164, 2219756, 2853972, 3329634, 4994451, 6659268, 9988902, 19977804]

約数ペア:

[(1, 19977804), (2, 9988902), (3, 6659268), (4, 4994451), (6, 3329634), (7, 2853972), (9, 2219756), (11, 1816164), (12, 1664817), (14, 1426986), (18, 1109878), (21, 951324), (22, 908082), (28, 713493), (33, 605388), (36, 554939), (42, 475662), (44, 454041), (63, 317108), (66, 302694), (77, 259452), (84, 237831), (99, 201796), (126, 158554), (132, 151347), (154, 129726), (198, 100898), (231, 86484), (252, 79277), (308, 64863), (396, 50449), (462, 43242), (693, 28828), (924, 21621), (1386, 14414), (2772, 7207)]