20176780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1093}}^1$

素因数の和:1186

約数の個数: 48

約数和(自身を含む): 46315584

約数和(自身を除く): 26138804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1093, 1420, 1846, 2186, 3692, 4372, 4615, 5465, 9230, 10930, 14209, 18460, 21860, 28418, 56836, 71045, 77603, 142090, 155206, 284180, 310412, 388015, 776030, 1008839, 1552060, 2017678, 4035356, 5044195, 10088390, 20176780]

約数ペア:

[(1, 20176780), (2, 10088390), (4, 5044195), (5, 4035356), (10, 2017678), (13, 1552060), (20, 1008839), (26, 776030), (52, 388015), (65, 310412), (71, 284180), (130, 155206), (142, 142090), (260, 77603), (284, 71045), (355, 56836), (710, 28418), (923, 21860), (1093, 18460), (1420, 14209), (1846, 10930), (2186, 9230), (3692, 5465), (4372, 4615)]