21384831

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 31872960

約数和(自身を除く): 10488129

約数列:

[1, 3, 13, 39, 61, 89, 101, 183, 267, 303, 793, 1157, 1313, 2379, 3471, 3939, 5429, 6161, 8989, 16287, 18483, 26967, 70577, 80093, 116857, 211731, 240279, 350571, 548329, 1644987, 7128277, 21384831]

約数ペア:

[(1, 21384831), (3, 7128277), (13, 1644987), (39, 548329), (61, 350571), (89, 240279), (101, 211731), (183, 116857), (267, 80093), (303, 70577), (793, 26967), (1157, 18483), (1313, 16287), (2379, 8989), (3471, 6161), (3939, 5429)]