21186750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:127

約数の個数: 128

約数和(自身を含む): 59439744

約数和(自身を除く): 38252994

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 41, 50, 53, 65, 75, 78, 82, 106, 123, 125, 130, 150, 159, 195, 205, 246, 250, 265, 318, 325, 375, 390, 410, 530, 533, 615, 650, 689, 750, 795, 975, 1025, 1066, 1230, 1325, 1378, 1590, 1599, 1625, 1950, 2050, 2067, 2173, 2650, 2665, 3075, 3198, 3250, 3445, 3975, 4134, 4346, 4875, 5125, 5330, 6150, 6519, 6625, 6890, 7950, 7995, 9750, 10250, 10335, 10865, 13038, 13250, 13325, 15375, 15990, 17225, 19875, 20670, 21730, 26650, 28249, 30750, 32595, 34450, 39750, 39975, 51675, 54325, 56498, 65190, 66625, 79950, 84747, 86125, 103350, 108650, 133250, 141245, 162975, 169494, 172250, 199875, 258375, 271625, 282490, 325950, 399750, 423735, 516750, 543250, 706225, 814875, 847470, 1412450, 1629750, 2118675, 3531125, 4237350, 7062250, 10593375, 21186750]

約数ペア:

[(1, 21186750), (2, 10593375), (3, 7062250), (5, 4237350), (6, 3531125), (10, 2118675), (13, 1629750), (15, 1412450), (25, 847470), (26, 814875), (30, 706225), (39, 543250), (41, 516750), (50, 423735), (53, 399750), (65, 325950), (75, 282490), (78, 271625), (82, 258375), (106, 199875), (123, 172250), (125, 169494), (130, 162975), (150, 141245), (159, 133250), (195, 108650), (205, 103350), (246, 86125), (250, 84747), (265, 79950), (318, 66625), (325, 65190), (375, 56498), (390, 54325), (410, 51675), (530, 39975), (533, 39750), (615, 34450), (650, 32595), (689, 30750), (750, 28249), (795, 26650), (975, 21730), (1025, 20670), (1066, 19875), (1230, 17225), (1325, 15990), (1378, 15375), (1590, 13325), (1599, 13250), (1625, 13038), (1950, 10865), (2050, 10335), (2067, 10250), (2173, 9750), (2650, 7995), (2665, 7950), (3075, 6890), (3198, 6625), (3250, 6519), (3445, 6150), (3975, 5330), (4134, 5125), (4346, 4875)]