20824400

素因数分解:

$2^4\times 5^2\times {\mathrm{79}}^1\times {\mathrm{659}}^1$

素因数の和:756

約数の個数: 60

約数和(自身を含む): 50740800

約数和(自身を除く): 29916400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 158, 200, 316, 395, 400, 632, 659, 790, 1264, 1318, 1580, 1975, 2636, 3160, 3295, 3950, 5272, 6320, 6590, 7900, 10544, 13180, 15800, 16475, 26360, 31600, 32950, 52061, 52720, 65900, 104122, 131800, 208244, 260305, 263600, 416488, 520610, 832976, 1041220, 1301525, 2082440, 2603050, 4164880, 5206100, 10412200, 20824400]

約数ペア:

[(1, 20824400), (2, 10412200), (4, 5206100), (5, 4164880), (8, 2603050), (10, 2082440), (16, 1301525), (20, 1041220), (25, 832976), (40, 520610), (50, 416488), (79, 263600), (80, 260305), (100, 208244), (158, 131800), (200, 104122), (316, 65900), (395, 52720), (400, 52061), (632, 32950), (659, 31600), (790, 26360), (1264, 16475), (1318, 15800), (1580, 13180), (1975, 10544), (2636, 7900), (3160, 6590), (3295, 6320), (3950, 5272)]