18750520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 44712000

約数和(自身を除く): 25961480

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 89, 92, 115, 178, 184, 229, 230, 356, 445, 458, 460, 712, 890, 916, 920, 1145, 1780, 1832, 2047, 2290, 3560, 4094, 4580, 5267, 8188, 9160, 10235, 10534, 16376, 20381, 20470, 21068, 26335, 40762, 40940, 42136, 52670, 81524, 81880, 101905, 105340, 163048, 203810, 210680, 407620, 468763, 815240, 937526, 1875052, 2343815, 3750104, 4687630, 9375260, 18750520]

約数ペア:

[(1, 18750520), (2, 9375260), (4, 4687630), (5, 3750104), (8, 2343815), (10, 1875052), (20, 937526), (23, 815240), (40, 468763), (46, 407620), (89, 210680), (92, 203810), (115, 163048), (178, 105340), (184, 101905), (229, 81880), (230, 81524), (356, 52670), (445, 42136), (458, 40940), (460, 40762), (712, 26335), (890, 21068), (916, 20470), (920, 20381), (1145, 16376), (1780, 10534), (1832, 10235), (2047, 9160), (2290, 8188), (3560, 5267), (4094, 4580)]