21787506

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5477}}^1$

素因数の和:5515

約数の個数: 48

約数和(自身を含む): 53837784

約数和(自身を除く): 32050278

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5477, 10954, 16431, 32862, 49293, 71201, 93109, 98586, 142402, 186218, 213603, 279327, 427206, 558654, 640809, 837981, 1210417, 1281618, 1675962, 2420834, 3631251, 7262502, 10893753, 21787506]

約数ペア:

[(1, 21787506), (2, 10893753), (3, 7262502), (6, 3631251), (9, 2420834), (13, 1675962), (17, 1281618), (18, 1210417), (26, 837981), (34, 640809), (39, 558654), (51, 427206), (78, 279327), (102, 213603), (117, 186218), (153, 142402), (221, 98586), (234, 93109), (306, 71201), (442, 49293), (663, 32862), (1326, 16431), (1989, 10954), (3978, 5477)]