1284508520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{360817}}^1$

素因数の和:360917

約数の個数: 32

約数和(自身を含む): 2922625800

約数和(自身を除く): 1638117280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 360817, 721634, 1443268, 1804085, 2886536, 3608170, 7216340, 14432680, 32112713, 64225426, 128450852, 160563565, 256901704, 321127130, 642254260, 1284508520]

約数ペア:

[(1, 1284508520), (2, 642254260), (4, 321127130), (5, 256901704), (8, 160563565), (10, 128450852), (20, 64225426), (40, 32112713), (89, 14432680), (178, 7216340), (356, 3608170), (445, 2886536), (712, 1804085), (890, 1443268), (1780, 721634), (3560, 360817)]