128746720

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:404

約数の個数: 96

約数和(自身を含む): 318318336

約数和(自身を除く): 189571616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 101, 124, 155, 160, 202, 248, 257, 310, 404, 496, 505, 514, 620, 808, 992, 1010, 1028, 1240, 1285, 1616, 2020, 2056, 2480, 2570, 3131, 3232, 4040, 4112, 4960, 5140, 6262, 7967, 8080, 8224, 10280, 12524, 15655, 15934, 16160, 20560, 25048, 25957, 31310, 31868, 39835, 41120, 50096, 51914, 62620, 63736, 79670, 100192, 103828, 125240, 127472, 129785, 159340, 207656, 250480, 254944, 259570, 318680, 415312, 500960, 519140, 637360, 804667, 830624, 1038280, 1274720, 1609334, 2076560, 3218668, 4023335, 4153120, 6437336, 8046670, 12874672, 16093340, 25749344, 32186680, 64373360, 128746720]

約数ペア:

[(1, 128746720), (2, 64373360), (4, 32186680), (5, 25749344), (8, 16093340), (10, 12874672), (16, 8046670), (20, 6437336), (31, 4153120), (32, 4023335), (40, 3218668), (62, 2076560), (80, 1609334), (101, 1274720), (124, 1038280), (155, 830624), (160, 804667), (202, 637360), (248, 519140), (257, 500960), (310, 415312), (404, 318680), (496, 259570), (505, 254944), (514, 250480), (620, 207656), (808, 159340), (992, 129785), (1010, 127472), (1028, 125240), (1240, 103828), (1285, 100192), (1616, 79670), (2020, 63736), (2056, 62620), (2480, 51914), (2570, 50096), (3131, 41120), (3232, 39835), (4040, 31868), (4112, 31310), (4960, 25957), (5140, 25048), (6262, 20560), (7967, 16160), (8080, 15934), (8224, 15655), (10280, 12524)]