21401955

素因数分解:

$3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2687}}^1$

素因数の和:2760

約数の個数: 32

約数和(自身を含む): 38707200

約数和(自身を除く): 17305245

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 135, 177, 295, 531, 885, 1593, 2655, 2687, 7965, 8061, 13435, 24183, 40305, 72549, 120915, 158533, 362745, 475599, 792665, 1426797, 2377995, 4280391, 7133985, 21401955]

約数ペア:

[(1, 21401955), (3, 7133985), (5, 4280391), (9, 2377995), (15, 1426797), (27, 792665), (45, 475599), (59, 362745), (135, 158533), (177, 120915), (295, 72549), (531, 40305), (885, 24183), (1593, 13435), (2655, 8061), (2687, 7965)]