28358820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:410

約数の個数: 144

約数和(自身を含む): 100009728

約数和(自身を除く): 71650908

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 317, 355, 420, 426, 497, 630, 634, 639, 710, 852, 951, 994, 1065, 1260, 1268, 1278, 1420, 1491, 1585, 1902, 1988, 2130, 2219, 2485, 2556, 2853, 2982, 3170, 3195, 3804, 4260, 4438, 4473, 4755, 4970, 5706, 5964, 6340, 6390, 6657, 7455, 8876, 8946, 9510, 9940, 11095, 11412, 12780, 13314, 14265, 14910, 17892, 19020, 19971, 22190, 22365, 22507, 26628, 28530, 29820, 33285, 39942, 44380, 44730, 45014, 57060, 66570, 67521, 79884, 89460, 90028, 99855, 112535, 133140, 135042, 157549, 199710, 202563, 225070, 270084, 315098, 337605, 399420, 405126, 450140, 472647, 630196, 675210, 787745, 810252, 945294, 1012815, 1350420, 1417941, 1575490, 1890588, 2025630, 2363235, 2835882, 3150980, 4051260, 4726470, 5671764, 7089705, 9452940, 14179410, 28358820]

約数ペア:

[(1, 28358820), (2, 14179410), (3, 9452940), (4, 7089705), (5, 5671764), (6, 4726470), (7, 4051260), (9, 3150980), (10, 2835882), (12, 2363235), (14, 2025630), (15, 1890588), (18, 1575490), (20, 1417941), (21, 1350420), (28, 1012815), (30, 945294), (35, 810252), (36, 787745), (42, 675210), (45, 630196), (60, 472647), (63, 450140), (70, 405126), (71, 399420), (84, 337605), (90, 315098), (105, 270084), (126, 225070), (140, 202563), (142, 199710), (180, 157549), (210, 135042), (213, 133140), (252, 112535), (284, 99855), (315, 90028), (317, 89460), (355, 79884), (420, 67521), (426, 66570), (497, 57060), (630, 45014), (634, 44730), (639, 44380), (710, 39942), (852, 33285), (951, 29820), (994, 28530), (1065, 26628), (1260, 22507), (1268, 22365), (1278, 22190), (1420, 19971), (1491, 19020), (1585, 17892), (1902, 14910), (1988, 14265), (2130, 13314), (2219, 12780), (2485, 11412), (2556, 11095), (2853, 9940), (2982, 9510), (3170, 8946), (3195, 8876), (3804, 7455), (4260, 6657), (4438, 6390), (4473, 6340), (4755, 5964), (4970, 5706)]