21195320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17093}}^1$

素因数の和:17135

約数の個数: 32

約数和(自身を含む): 49230720

約数和(自身を除く): 28035400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17093, 34186, 68372, 85465, 136744, 170930, 341860, 529883, 683720, 1059766, 2119532, 2649415, 4239064, 5298830, 10597660, 21195320]

約数ペア:

[(1, 21195320), (2, 10597660), (4, 5298830), (5, 4239064), (8, 2649415), (10, 2119532), (20, 1059766), (31, 683720), (40, 529883), (62, 341860), (124, 170930), (155, 136744), (248, 85465), (310, 68372), (620, 34186), (1240, 17093)]