20719780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1453}}^1$

素因数の和:1516

約数の個数: 48

約数和(自身を含む): 46900224

約数和(自身を除く): 26180444

約数列:

[1, 2, 4, 5, 10, 20, 23, 31, 46, 62, 92, 115, 124, 155, 230, 310, 460, 620, 713, 1426, 1453, 2852, 2906, 3565, 5812, 7130, 7265, 14260, 14530, 29060, 33419, 45043, 66838, 90086, 133676, 167095, 180172, 225215, 334190, 450430, 668380, 900860, 1035989, 2071978, 4143956, 5179945, 10359890, 20719780]

約数ペア:

[(1, 20719780), (2, 10359890), (4, 5179945), (5, 4143956), (10, 2071978), (20, 1035989), (23, 900860), (31, 668380), (46, 450430), (62, 334190), (92, 225215), (115, 180172), (124, 167095), (155, 133676), (230, 90086), (310, 66838), (460, 45043), (620, 33419), (713, 29060), (1426, 14530), (1453, 14260), (2852, 7265), (2906, 7130), (3565, 5812)]