21956320

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3347}}^1$

素因数の和:3403

約数の個数: 48

約数和(自身を含む): 53152848

約数和(自身を除く): 31196528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 3347, 6560, 6694, 13388, 16735, 26776, 33470, 53552, 66940, 107104, 133880, 137227, 267760, 274454, 535520, 548908, 686135, 1097816, 1372270, 2195632, 2744540, 4391264, 5489080, 10978160, 21956320]

約数ペア:

[(1, 21956320), (2, 10978160), (4, 5489080), (5, 4391264), (8, 2744540), (10, 2195632), (16, 1372270), (20, 1097816), (32, 686135), (40, 548908), (41, 535520), (80, 274454), (82, 267760), (160, 137227), (164, 133880), (205, 107104), (328, 66940), (410, 53552), (656, 33470), (820, 26776), (1312, 16735), (1640, 13388), (3280, 6694), (3347, 6560)]