21595720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18617}}^1$

素因数の和:18657

約数の個数: 32

約数和(自身を含む): 50268600

約数和(自身を除く): 28672880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18617, 37234, 74468, 93085, 148936, 186170, 372340, 539893, 744680, 1079786, 2159572, 2699465, 4319144, 5398930, 10797860, 21595720]

約数ペア:

[(1, 21595720), (2, 10797860), (4, 5398930), (5, 4319144), (8, 2699465), (10, 2159572), (20, 1079786), (29, 744680), (40, 539893), (58, 372340), (116, 186170), (145, 148936), (232, 93085), (290, 74468), (580, 37234), (1160, 18617)]