21586940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{367}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 48408192

約数和(自身を除く): 26821252

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 173, 340, 346, 367, 692, 734, 865, 1468, 1730, 1835, 2941, 3460, 3670, 5882, 6239, 7340, 11764, 12478, 14705, 24956, 29410, 31195, 58820, 62390, 63491, 124780, 126982, 253964, 317455, 634910, 1079347, 1269820, 2158694, 4317388, 5396735, 10793470, 21586940]

約数ペア:

[(1, 21586940), (2, 10793470), (4, 5396735), (5, 4317388), (10, 2158694), (17, 1269820), (20, 1079347), (34, 634910), (68, 317455), (85, 253964), (170, 126982), (173, 124780), (340, 63491), (346, 62390), (367, 58820), (692, 31195), (734, 29410), (865, 24956), (1468, 14705), (1730, 12478), (1835, 11764), (2941, 7340), (3460, 6239), (3670, 5882)]