78318680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 128

約数和(自身を含む): 205286400

約数和(自身を除く): 126967720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 71, 88, 92, 109, 110, 115, 142, 184, 218, 220, 230, 253, 284, 355, 436, 440, 460, 506, 545, 568, 710, 781, 872, 920, 1012, 1090, 1199, 1265, 1420, 1562, 1633, 2024, 2180, 2398, 2507, 2530, 2840, 3124, 3266, 3905, 4360, 4796, 5014, 5060, 5995, 6248, 6532, 7739, 7810, 8165, 9592, 10028, 10120, 11990, 12535, 13064, 15478, 15620, 16330, 17963, 20056, 23980, 25070, 27577, 30956, 31240, 32660, 35926, 38695, 47960, 50140, 55154, 61912, 65320, 71852, 77390, 85129, 89815, 100280, 110308, 137885, 143704, 154780, 170258, 177997, 179630, 220616, 275770, 309560, 340516, 355994, 359260, 425645, 551540, 681032, 711988, 718520, 851290, 889985, 1103080, 1423976, 1702580, 1779970, 1957967, 3405160, 3559940, 3915934, 7119880, 7831868, 9789835, 15663736, 19579670, 39159340, 78318680]

約数ペア:

[(1, 78318680), (2, 39159340), (4, 19579670), (5, 15663736), (8, 9789835), (10, 7831868), (11, 7119880), (20, 3915934), (22, 3559940), (23, 3405160), (40, 1957967), (44, 1779970), (46, 1702580), (55, 1423976), (71, 1103080), (88, 889985), (92, 851290), (109, 718520), (110, 711988), (115, 681032), (142, 551540), (184, 425645), (218, 359260), (220, 355994), (230, 340516), (253, 309560), (284, 275770), (355, 220616), (436, 179630), (440, 177997), (460, 170258), (506, 154780), (545, 143704), (568, 137885), (710, 110308), (781, 100280), (872, 89815), (920, 85129), (1012, 77390), (1090, 71852), (1199, 65320), (1265, 61912), (1420, 55154), (1562, 50140), (1633, 47960), (2024, 38695), (2180, 35926), (2398, 32660), (2507, 31240), (2530, 30956), (2840, 27577), (3124, 25070), (3266, 23980), (3905, 20056), (4360, 17963), (4796, 16330), (5014, 15620), (5060, 15478), (5995, 13064), (6248, 12535), (6532, 11990), (7739, 10120), (7810, 10028), (8165, 9592)]