20679885

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^3\times {\mathrm{67}}^1$

素因数の和:135

約数の個数: 48

約数和(自身を含む): 38400960

約数和(自身を除く): 17721075

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 67, 95, 171, 201, 285, 335, 361, 603, 855, 1005, 1083, 1273, 1805, 3015, 3249, 3819, 5415, 6365, 6859, 11457, 16245, 19095, 20577, 24187, 34295, 57285, 61731, 72561, 102885, 120935, 217683, 308655, 362805, 459553, 1088415, 1378659, 2297765, 4135977, 6893295, 20679885]

約数ペア:

[(1, 20679885), (3, 6893295), (5, 4135977), (9, 2297765), (15, 1378659), (19, 1088415), (45, 459553), (57, 362805), (67, 308655), (95, 217683), (171, 120935), (201, 102885), (285, 72561), (335, 61731), (361, 57285), (603, 34295), (855, 24187), (1005, 20577), (1083, 19095), (1273, 16245), (1805, 11457), (3015, 6859), (3249, 6365), (3819, 5415)]