21000901330

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1\times {\mathrm{51283}}^1$

素因数の和:52642

約数の個数: 32

約数和(自身を含む): 39051330048

約数和(自身を除く): 18050428718

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 1321, 2642, 6605, 13210, 40951, 51283, 81902, 102566, 204755, 256415, 409510, 512830, 1589773, 3179546, 7948865, 15897730, 67744843, 135489686, 338724215, 677448430, 2100090133, 4200180266, 10500450665, 21000901330]

約数ペア:

[(1, 21000901330), (2, 10500450665), (5, 4200180266), (10, 2100090133), (31, 677448430), (62, 338724215), (155, 135489686), (310, 67744843), (1321, 15897730), (2642, 7948865), (6605, 3179546), (13210, 1589773), (40951, 512830), (51283, 409510), (81902, 256415), (102566, 204755)]