20001493820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{763999}}^1$

素因数の和:764043

約数の個数: 96

約数和(自身を含む): 55448064000

約数和(自身を除く): 35446570180

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 55, 68, 70, 77, 85, 110, 119, 140, 154, 170, 187, 220, 238, 308, 340, 374, 385, 476, 595, 748, 770, 935, 1190, 1309, 1540, 1870, 2380, 2618, 3740, 5236, 6545, 13090, 26180, 763999, 1527998, 3055996, 3819995, 5347993, 7639990, 8403989, 10695986, 12987983, 15279980, 16807978, 21391972, 25975966, 26739965, 33615956, 42019945, 51951932, 53479930, 58827923, 64939915, 84039890, 90915881, 106959860, 117655846, 129879830, 142867813, 168079780, 181831762, 235311692, 259759660, 285735626, 294139615, 363663524, 454579405, 571471252, 588279230, 714339065, 909158810, 1000074691, 1176558460, 1428678130, 1818317620, 2000149382, 2857356260, 4000298764, 5000373455, 10000746910, 20001493820]

約数ペア:

[(1, 20001493820), (2, 10000746910), (4, 5000373455), (5, 4000298764), (7, 2857356260), (10, 2000149382), (11, 1818317620), (14, 1428678130), (17, 1176558460), (20, 1000074691), (22, 909158810), (28, 714339065), (34, 588279230), (35, 571471252), (44, 454579405), (55, 363663524), (68, 294139615), (70, 285735626), (77, 259759660), (85, 235311692), (110, 181831762), (119, 168079780), (140, 142867813), (154, 129879830), (170, 117655846), (187, 106959860), (220, 90915881), (238, 84039890), (308, 64939915), (340, 58827923), (374, 53479930), (385, 51951932), (476, 42019945), (595, 33615956), (748, 26739965), (770, 25975966), (935, 21391972), (1190, 16807978), (1309, 15279980), (1540, 12987983), (1870, 10695986), (2380, 8403989), (2618, 7639990), (3740, 5347993), (5236, 3819995), (6545, 3055996), (13090, 1527998), (26180, 763999)]