21543704

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 50379840

約数和(自身を除く): 28836136

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 101, 104, 182, 202, 293, 364, 404, 586, 707, 728, 808, 1172, 1313, 1414, 2051, 2344, 2626, 2828, 3809, 4102, 5252, 5656, 7618, 8204, 9191, 10504, 15236, 16408, 18382, 26663, 29593, 30472, 36764, 53326, 59186, 73528, 106652, 118372, 207151, 213304, 236744, 384709, 414302, 769418, 828604, 1538836, 1657208, 2692963, 3077672, 5385926, 10771852, 21543704]

約数ペア:

[(1, 21543704), (2, 10771852), (4, 5385926), (7, 3077672), (8, 2692963), (13, 1657208), (14, 1538836), (26, 828604), (28, 769418), (52, 414302), (56, 384709), (91, 236744), (101, 213304), (104, 207151), (182, 118372), (202, 106652), (293, 73528), (364, 59186), (404, 53326), (586, 36764), (707, 30472), (728, 29593), (808, 26663), (1172, 18382), (1313, 16408), (1414, 15236), (2051, 10504), (2344, 9191), (2626, 8204), (2828, 7618), (3809, 5656), (4102, 5252)]