21212828

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{577}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 46221504

約数和(自身を除く): 25008676

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 101, 182, 202, 364, 404, 577, 707, 1154, 1313, 1414, 2308, 2626, 2828, 4039, 5252, 7501, 8078, 9191, 15002, 16156, 18382, 30004, 36764, 52507, 58277, 105014, 116554, 210028, 233108, 407939, 757601, 815878, 1515202, 1631756, 3030404, 5303207, 10606414, 21212828]

約数ペア:

[(1, 21212828), (2, 10606414), (4, 5303207), (7, 3030404), (13, 1631756), (14, 1515202), (26, 815878), (28, 757601), (52, 407939), (91, 233108), (101, 210028), (182, 116554), (202, 105014), (364, 58277), (404, 52507), (577, 36764), (707, 30004), (1154, 18382), (1313, 16156), (1414, 15002), (2308, 9191), (2626, 8078), (2828, 7501), (4039, 5252)]