18565820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^2$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 48465312

約数和(自身を除く): 29899492

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 101, 130, 140, 182, 202, 260, 364, 404, 455, 505, 707, 910, 1010, 1313, 1414, 1820, 2020, 2626, 2828, 3535, 5252, 6565, 7070, 9191, 10201, 13130, 14140, 18382, 20402, 26260, 36764, 40804, 45955, 51005, 71407, 91910, 102010, 132613, 142814, 183820, 204020, 265226, 285628, 357035, 530452, 663065, 714070, 928291, 1326130, 1428140, 1856582, 2652260, 3713164, 4641455, 9282910, 18565820]

約数ペア:

[(1, 18565820), (2, 9282910), (4, 4641455), (5, 3713164), (7, 2652260), (10, 1856582), (13, 1428140), (14, 1326130), (20, 928291), (26, 714070), (28, 663065), (35, 530452), (52, 357035), (65, 285628), (70, 265226), (91, 204020), (101, 183820), (130, 142814), (140, 132613), (182, 102010), (202, 91910), (260, 71407), (364, 51005), (404, 45955), (455, 40804), (505, 36764), (707, 26260), (910, 20402), (1010, 18382), (1313, 14140), (1414, 13130), (1820, 10201), (2020, 9191), (2626, 7070), (2828, 6565), (3535, 5252)]