21930400

素因数分解:

$2^5\times 5^2\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:446

約数の個数: 72

約数和(自身を含む): 54371520

約数和(自身を除く): 32441120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 79, 80, 100, 158, 160, 200, 316, 347, 395, 400, 632, 694, 790, 800, 1264, 1388, 1580, 1735, 1975, 2528, 2776, 3160, 3470, 3950, 5552, 6320, 6940, 7900, 8675, 11104, 12640, 13880, 15800, 17350, 27413, 27760, 31600, 34700, 54826, 55520, 63200, 69400, 109652, 137065, 138800, 219304, 274130, 277600, 438608, 548260, 685325, 877216, 1096520, 1370650, 2193040, 2741300, 4386080, 5482600, 10965200, 21930400]

約数ペア:

[(1, 21930400), (2, 10965200), (4, 5482600), (5, 4386080), (8, 2741300), (10, 2193040), (16, 1370650), (20, 1096520), (25, 877216), (32, 685325), (40, 548260), (50, 438608), (79, 277600), (80, 274130), (100, 219304), (158, 138800), (160, 137065), (200, 109652), (316, 69400), (347, 63200), (395, 55520), (400, 54826), (632, 34700), (694, 31600), (790, 27760), (800, 27413), (1264, 17350), (1388, 15800), (1580, 13880), (1735, 12640), (1975, 11104), (2528, 8675), (2776, 7900), (3160, 6940), (3470, 6320), (3950, 5552)]