20572500

素因数分解:

$2^2\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:251

約数の個数: 120

約数和(自身を含む): 64904224

約数和(自身を除く): 44331724

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, 125, 130, 150, 156, 195, 211, 250, 260, 300, 325, 375, 390, 422, 500, 625, 633, 650, 750, 780, 844, 975, 1055, 1250, 1266, 1300, 1500, 1625, 1875, 1950, 2110, 2500, 2532, 2743, 3165, 3250, 3750, 3900, 4220, 4875, 5275, 5486, 6330, 6500, 7500, 8125, 8229, 9750, 10550, 10972, 12660, 13715, 15825, 16250, 16458, 19500, 21100, 24375, 26375, 27430, 31650, 32500, 32916, 41145, 48750, 52750, 54860, 63300, 68575, 79125, 82290, 97500, 105500, 131875, 137150, 158250, 164580, 205725, 263750, 274300, 316500, 342875, 395625, 411450, 527500, 685750, 791250, 822900, 1028625, 1371500, 1582500, 1714375, 2057250, 3428750, 4114500, 5143125, 6857500, 10286250, 20572500]

約数ペア:

[(1, 20572500), (2, 10286250), (3, 6857500), (4, 5143125), (5, 4114500), (6, 3428750), (10, 2057250), (12, 1714375), (13, 1582500), (15, 1371500), (20, 1028625), (25, 822900), (26, 791250), (30, 685750), (39, 527500), (50, 411450), (52, 395625), (60, 342875), (65, 316500), (75, 274300), (78, 263750), (100, 205725), (125, 164580), (130, 158250), (150, 137150), (156, 131875), (195, 105500), (211, 97500), (250, 82290), (260, 79125), (300, 68575), (325, 63300), (375, 54860), (390, 52750), (422, 48750), (500, 41145), (625, 32916), (633, 32500), (650, 31650), (750, 27430), (780, 26375), (844, 24375), (975, 21100), (1055, 19500), (1250, 16458), (1266, 16250), (1300, 15825), (1500, 13715), (1625, 12660), (1875, 10972), (1950, 10550), (2110, 9750), (2500, 8229), (2532, 8125), (2743, 7500), (3165, 6500), (3250, 6330), (3750, 5486), (3900, 5275), (4220, 4875)]