19784200

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3191}}^1$

素因数の和:3238

約数の個数: 48

約数和(自身を含む): 47496960

約数和(自身を除く): 27712760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 3191, 6200, 6382, 12764, 15955, 25528, 31910, 63820, 79775, 98921, 127640, 159550, 197842, 319100, 395684, 494605, 638200, 791368, 989210, 1978420, 2473025, 3956840, 4946050, 9892100, 19784200]

約数ペア:

[(1, 19784200), (2, 9892100), (4, 4946050), (5, 3956840), (8, 2473025), (10, 1978420), (20, 989210), (25, 791368), (31, 638200), (40, 494605), (50, 395684), (62, 319100), (100, 197842), (124, 159550), (155, 127640), (200, 98921), (248, 79775), (310, 63820), (620, 31910), (775, 25528), (1240, 15955), (1550, 12764), (3100, 6382), (3191, 6200)]