255671980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{15647}}^1$

素因数の和:15718

約数の個数: 48

約数和(自身を含む): 578350080

約数和(自身を除く): 322678100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 3268, 4085, 8170, 15647, 16340, 31294, 62588, 78235, 156470, 297293, 312940, 594586, 672821, 1189172, 1345642, 1486465, 2691284, 2972930, 3364105, 5945860, 6728210, 12783599, 13456420, 25567198, 51134396, 63917995, 127835990, 255671980]

約数ペア:

[(1, 255671980), (2, 127835990), (4, 63917995), (5, 51134396), (10, 25567198), (19, 13456420), (20, 12783599), (38, 6728210), (43, 5945860), (76, 3364105), (86, 2972930), (95, 2691284), (172, 1486465), (190, 1345642), (215, 1189172), (380, 672821), (430, 594586), (817, 312940), (860, 297293), (1634, 156470), (3268, 78235), (4085, 62588), (8170, 31294), (15647, 16340)]