208760045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1\times {\mathrm{331}}^1$

素因数の和:693

約数の個数: 32

約数和(自身を含む): 280218624

約数和(自身を除く): 71458579

約数列:

[1, 5, 13, 31, 65, 155, 313, 331, 403, 1565, 1655, 2015, 4069, 4303, 9703, 10261, 20345, 21515, 48515, 51305, 103603, 126139, 133393, 518015, 630695, 666965, 1346839, 3211693, 6734195, 16058465, 41752009, 208760045]

約数ペア:

[(1, 208760045), (5, 41752009), (13, 16058465), (31, 6734195), (65, 3211693), (155, 1346839), (313, 666965), (331, 630695), (403, 518015), (1565, 133393), (1655, 126139), (2015, 103603), (4069, 51305), (4303, 48515), (9703, 21515), (10261, 20345)]