123939320

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{4789}}^1$

素因数の和:5447

約数の個数: 32

約数和(自身を含む): 279352800

約数和(自身を除く): 155413480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 4789, 5176, 6470, 9578, 12940, 19156, 23945, 25880, 38312, 47890, 95780, 191560, 3098483, 6196966, 12393932, 15492415, 24787864, 30984830, 61969660, 123939320]

約数ペア:

[(1, 123939320), (2, 61969660), (4, 30984830), (5, 24787864), (8, 15492415), (10, 12393932), (20, 6196966), (40, 3098483), (647, 191560), (1294, 95780), (2588, 47890), (3235, 38312), (4789, 25880), (5176, 23945), (6470, 19156), (9578, 12940)]