21280260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:733

約数の個数: 96

約数和(自身を含む): 65221632

約数和(自身を除く): 43941372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 31, 34, 51, 60, 62, 68, 85, 93, 102, 124, 155, 170, 186, 204, 255, 310, 340, 372, 465, 510, 527, 620, 673, 930, 1020, 1054, 1346, 1581, 1860, 2019, 2108, 2635, 2692, 3162, 3365, 4038, 5270, 6324, 6730, 7905, 8076, 10095, 10540, 11441, 13460, 15810, 20190, 20863, 22882, 31620, 34323, 40380, 41726, 45764, 57205, 62589, 68646, 83452, 104315, 114410, 125178, 137292, 171615, 208630, 228820, 250356, 312945, 343230, 354671, 417260, 625890, 686460, 709342, 1064013, 1251780, 1418684, 1773355, 2128026, 3546710, 4256052, 5320065, 7093420, 10640130, 21280260]

約数ペア:

[(1, 21280260), (2, 10640130), (3, 7093420), (4, 5320065), (5, 4256052), (6, 3546710), (10, 2128026), (12, 1773355), (15, 1418684), (17, 1251780), (20, 1064013), (30, 709342), (31, 686460), (34, 625890), (51, 417260), (60, 354671), (62, 343230), (68, 312945), (85, 250356), (93, 228820), (102, 208630), (124, 171615), (155, 137292), (170, 125178), (186, 114410), (204, 104315), (255, 83452), (310, 68646), (340, 62589), (372, 57205), (465, 45764), (510, 41726), (527, 40380), (620, 34323), (673, 31620), (930, 22882), (1020, 20863), (1054, 20190), (1346, 15810), (1581, 13460), (1860, 11441), (2019, 10540), (2108, 10095), (2635, 8076), (2692, 7905), (3162, 6730), (3365, 6324), (4038, 5270)]