21900970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{587}}^1$

素因数の和:655

約数の個数: 64

約数和(自身を含む): 49787136

約数和(自身を除く): 27886166

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 65, 70, 82, 91, 130, 182, 205, 287, 410, 455, 533, 574, 587, 910, 1066, 1174, 1435, 2665, 2870, 2935, 3731, 4109, 5330, 5870, 7462, 7631, 8218, 15262, 18655, 20545, 24067, 37310, 38155, 41090, 48134, 53417, 76310, 106834, 120335, 168469, 240670, 267085, 312871, 336938, 534170, 625742, 842345, 1564355, 1684690, 2190097, 3128710, 4380194, 10950485, 21900970]

約数ペア:

[(1, 21900970), (2, 10950485), (5, 4380194), (7, 3128710), (10, 2190097), (13, 1684690), (14, 1564355), (26, 842345), (35, 625742), (41, 534170), (65, 336938), (70, 312871), (82, 267085), (91, 240670), (130, 168469), (182, 120335), (205, 106834), (287, 76310), (410, 53417), (455, 48134), (533, 41090), (574, 38155), (587, 37310), (910, 24067), (1066, 20545), (1174, 18655), (1435, 15262), (2665, 8218), (2870, 7631), (2935, 7462), (3731, 5870), (4109, 5330)]