19867220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{823}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 44851968

約数和(自身を除く): 24984748

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 823, 1207, 1420, 1646, 2414, 3292, 4115, 4828, 6035, 8230, 12070, 13991, 16460, 24140, 27982, 55964, 58433, 69955, 116866, 139910, 233732, 279820, 292165, 584330, 993361, 1168660, 1986722, 3973444, 4966805, 9933610, 19867220]

約数ペア:

[(1, 19867220), (2, 9933610), (4, 4966805), (5, 3973444), (10, 1986722), (17, 1168660), (20, 993361), (34, 584330), (68, 292165), (71, 279820), (85, 233732), (142, 139910), (170, 116866), (284, 69955), (340, 58433), (355, 55964), (710, 27982), (823, 24140), (1207, 16460), (1420, 13991), (1646, 12070), (2414, 8230), (3292, 6035), (4115, 4828)]