21803804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{227}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 21862756

約数列:

[1, 2, 4, 11, 22, 37, 44, 59, 74, 118, 148, 227, 236, 407, 454, 649, 814, 908, 1298, 1628, 2183, 2497, 2596, 4366, 4994, 8399, 8732, 9988, 13393, 16798, 24013, 26786, 33596, 48026, 53572, 92389, 96052, 147323, 184778, 294646, 369556, 495541, 589292, 991082, 1982164, 5450951, 10901902, 21803804]

約数ペア:

[(1, 21803804), (2, 10901902), (4, 5450951), (11, 1982164), (22, 991082), (37, 589292), (44, 495541), (59, 369556), (74, 294646), (118, 184778), (148, 147323), (227, 96052), (236, 92389), (407, 53572), (454, 48026), (649, 33596), (814, 26786), (908, 24013), (1298, 16798), (1628, 13393), (2183, 9988), (2497, 8732), (2596, 8399), (4366, 4994)]