309799980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3463}}^1$

素因数の和:3556

約数の個数: 144

約数和(自身を含む): 1089414144

約数和(自身を除く): 779614164

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, 355, 420, 426, 497, 630, 639, 710, 852, 994, 1065, 1260, 1278, 1420, 1491, 1988, 2130, 2485, 2556, 2982, 3195, 3463, 4260, 4473, 4970, 5964, 6390, 6926, 7455, 8946, 9940, 10389, 12780, 13852, 14910, 17315, 17892, 20778, 22365, 24241, 29820, 31167, 34630, 41556, 44730, 48482, 51945, 62334, 69260, 72723, 89460, 96964, 103890, 121205, 124668, 145446, 155835, 207780, 218169, 242410, 245873, 290892, 311670, 363615, 436338, 484820, 491746, 623340, 727230, 737619, 872676, 983492, 1090845, 1229365, 1454460, 1475238, 1721111, 2181690, 2212857, 2458730, 2950476, 3442222, 3688095, 4363380, 4425714, 4917460, 5163333, 6884444, 7376190, 8605555, 8851428, 10326666, 11064285, 14752380, 15489999, 17211110, 20653332, 22128570, 25816665, 30979998, 34422220, 44257140, 51633330, 61959996, 77449995, 103266660, 154899990, 309799980]

約数ペア:

[(1, 309799980), (2, 154899990), (3, 103266660), (4, 77449995), (5, 61959996), (6, 51633330), (7, 44257140), (9, 34422220), (10, 30979998), (12, 25816665), (14, 22128570), (15, 20653332), (18, 17211110), (20, 15489999), (21, 14752380), (28, 11064285), (30, 10326666), (35, 8851428), (36, 8605555), (42, 7376190), (45, 6884444), (60, 5163333), (63, 4917460), (70, 4425714), (71, 4363380), (84, 3688095), (90, 3442222), (105, 2950476), (126, 2458730), (140, 2212857), (142, 2181690), (180, 1721111), (210, 1475238), (213, 1454460), (252, 1229365), (284, 1090845), (315, 983492), (355, 872676), (420, 737619), (426, 727230), (497, 623340), (630, 491746), (639, 484820), (710, 436338), (852, 363615), (994, 311670), (1065, 290892), (1260, 245873), (1278, 242410), (1420, 218169), (1491, 207780), (1988, 155835), (2130, 145446), (2485, 124668), (2556, 121205), (2982, 103890), (3195, 96964), (3463, 89460), (4260, 72723), (4473, 69260), (4970, 62334), (5964, 51945), (6390, 48482), (6926, 44730), (7455, 41556), (8946, 34630), (9940, 31167), (10389, 29820), (12780, 24241), (13852, 22365), (14910, 20778), (17315, 17892)]