21765900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5581}}^1$

素因数の和:5611

約数の個数: 72

約数和(自身を含む): 67832464

約数和(自身を除く): 46066564

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5581, 11162, 16743, 22324, 27905, 33486, 55810, 66972, 72553, 83715, 111620, 139525, 145106, 167430, 217659, 279050, 290212, 334860, 362765, 418575, 435318, 558100, 725530, 837150, 870636, 1088295, 1451060, 1674300, 1813825, 2176590, 3627650, 4353180, 5441475, 7255300, 10882950, 21765900]

約数ペア:

[(1, 21765900), (2, 10882950), (3, 7255300), (4, 5441475), (5, 4353180), (6, 3627650), (10, 2176590), (12, 1813825), (13, 1674300), (15, 1451060), (20, 1088295), (25, 870636), (26, 837150), (30, 725530), (39, 558100), (50, 435318), (52, 418575), (60, 362765), (65, 334860), (75, 290212), (78, 279050), (100, 217659), (130, 167430), (150, 145106), (156, 139525), (195, 111620), (260, 83715), (300, 72553), (325, 66972), (390, 55810), (650, 33486), (780, 27905), (975, 22324), (1300, 16743), (1950, 11162), (3900, 5581)]