20210067380

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{120917}}^1$

素因数の和:121124

約数の個数: 48

約数和(自身を含む): 43452125136

約数和(自身を除く): 23242057756

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 137, 244, 274, 305, 548, 610, 685, 1220, 1370, 2740, 8357, 16714, 33428, 41785, 83570, 120917, 167140, 241834, 483668, 604585, 1209170, 2418340, 7375937, 14751874, 16565629, 29503748, 33131258, 36879685, 66262516, 73759370, 82828145, 147518740, 165656290, 331312580, 1010503369, 2021006738, 4042013476, 5052516845, 10105033690, 20210067380]

約数ペア:

[(1, 20210067380), (2, 10105033690), (4, 5052516845), (5, 4042013476), (10, 2021006738), (20, 1010503369), (61, 331312580), (122, 165656290), (137, 147518740), (244, 82828145), (274, 73759370), (305, 66262516), (548, 36879685), (610, 33131258), (685, 29503748), (1220, 16565629), (1370, 14751874), (2740, 7375937), (8357, 2418340), (16714, 1209170), (33428, 604585), (41785, 483668), (83570, 241834), (120917, 167140)]