21983960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17729}}^1$

素因数の和:17771

約数の個数: 32

約数和(自身を含む): 51062400

約数和(自身を除く): 29078440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17729, 35458, 70916, 88645, 141832, 177290, 354580, 549599, 709160, 1099198, 2198396, 2747995, 4396792, 5495990, 10991980, 21983960]

約数ペア:

[(1, 21983960), (2, 10991980), (4, 5495990), (5, 4396792), (8, 2747995), (10, 2198396), (20, 1099198), (31, 709160), (40, 549599), (62, 354580), (124, 177290), (155, 141832), (248, 88645), (310, 70916), (620, 35458), (1240, 17729)]