21307000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1$

素因数の和:194

約数の個数: 128

約数和(自身を含む): 58968000

約数和(自身を除く): 37661000

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 88, 100, 104, 110, 125, 130, 143, 149, 200, 220, 250, 260, 275, 286, 298, 325, 440, 500, 520, 550, 572, 596, 650, 715, 745, 1000, 1100, 1144, 1192, 1300, 1375, 1430, 1490, 1625, 1639, 1937, 2200, 2600, 2750, 2860, 2980, 3250, 3278, 3575, 3725, 3874, 5500, 5720, 5960, 6500, 6556, 7150, 7450, 7748, 8195, 9685, 11000, 13000, 13112, 14300, 14900, 15496, 16390, 17875, 18625, 19370, 21307, 28600, 29800, 32780, 35750, 37250, 38740, 40975, 42614, 48425, 65560, 71500, 74500, 77480, 81950, 85228, 96850, 106535, 143000, 149000, 163900, 170456, 193700, 204875, 213070, 242125, 327800, 387400, 409750, 426140, 484250, 532675, 819500, 852280, 968500, 1065350, 1639000, 1937000, 2130700, 2663375, 4261400, 5326750, 10653500, 21307000]

約数ペア:

[(1, 21307000), (2, 10653500), (4, 5326750), (5, 4261400), (8, 2663375), (10, 2130700), (11, 1937000), (13, 1639000), (20, 1065350), (22, 968500), (25, 852280), (26, 819500), (40, 532675), (44, 484250), (50, 426140), (52, 409750), (55, 387400), (65, 327800), (88, 242125), (100, 213070), (104, 204875), (110, 193700), (125, 170456), (130, 163900), (143, 149000), (149, 143000), (200, 106535), (220, 96850), (250, 85228), (260, 81950), (275, 77480), (286, 74500), (298, 71500), (325, 65560), (440, 48425), (500, 42614), (520, 40975), (550, 38740), (572, 37250), (596, 35750), (650, 32780), (715, 29800), (745, 28600), (1000, 21307), (1100, 19370), (1144, 18625), (1192, 17875), (1300, 16390), (1375, 15496), (1430, 14900), (1490, 14300), (1625, 13112), (1639, 13000), (1937, 11000), (2200, 9685), (2600, 8195), (2750, 7748), (2860, 7450), (2980, 7150), (3250, 6556), (3278, 6500), (3575, 5960), (3725, 5720), (3874, 5500)]