31379925

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^3\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 48

約数和(自身を含む): 55661120

約数和(自身を除く): 24281195

約数列:

[1, 3, 5, 15, 19, 25, 57, 61, 75, 95, 183, 285, 305, 361, 475, 915, 1083, 1159, 1425, 1525, 1805, 3477, 4575, 5415, 5795, 6859, 9025, 17385, 20577, 22021, 27075, 28975, 34295, 66063, 86925, 102885, 110105, 171475, 330315, 418399, 514425, 550525, 1255197, 1651575, 2091995, 6275985, 10459975, 31379925]

約数ペア:

[(1, 31379925), (3, 10459975), (5, 6275985), (15, 2091995), (19, 1651575), (25, 1255197), (57, 550525), (61, 514425), (75, 418399), (95, 330315), (183, 171475), (285, 110105), (305, 102885), (361, 86925), (475, 66063), (915, 34295), (1083, 28975), (1159, 27075), (1425, 22021), (1525, 20577), (1805, 17385), (3477, 9025), (4575, 6859), (5415, 5795)]