280198700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1657}}^1$

素因数の和:1779

約数の個数: 72

約数和(自身を含む): 647614800

約数和(自身を除く): 367416100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 89, 95, 100, 178, 190, 356, 380, 445, 475, 890, 950, 1657, 1691, 1780, 1900, 2225, 3314, 3382, 4450, 6628, 6764, 8285, 8455, 8900, 16570, 16910, 31483, 33140, 33820, 41425, 42275, 62966, 82850, 84550, 125932, 147473, 157415, 165700, 169100, 294946, 314830, 589892, 629660, 737365, 787075, 1474730, 1574150, 2801987, 2949460, 3148300, 3686825, 5603974, 7373650, 11207948, 14009935, 14747300, 28019870, 56039740, 70049675, 140099350, 280198700]

約数ペア:

[(1, 280198700), (2, 140099350), (4, 70049675), (5, 56039740), (10, 28019870), (19, 14747300), (20, 14009935), (25, 11207948), (38, 7373650), (50, 5603974), (76, 3686825), (89, 3148300), (95, 2949460), (100, 2801987), (178, 1574150), (190, 1474730), (356, 787075), (380, 737365), (445, 629660), (475, 589892), (890, 314830), (950, 294946), (1657, 169100), (1691, 165700), (1780, 157415), (1900, 147473), (2225, 125932), (3314, 84550), (3382, 82850), (4450, 62966), (6628, 42275), (6764, 41425), (8285, 33820), (8455, 33140), (8900, 31483), (16570, 16910)]