1999508680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{5393}}^1$

素因数の和:5471

約数の個数: 128

約数和(自身を含む): 5219665920

約数和(自身を除く): 3220157240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 31, 40, 46, 52, 62, 65, 92, 104, 115, 124, 130, 155, 184, 230, 248, 260, 299, 310, 403, 460, 520, 598, 620, 713, 806, 920, 1196, 1240, 1426, 1495, 1612, 2015, 2392, 2852, 2990, 3224, 3565, 4030, 5393, 5704, 5980, 7130, 8060, 9269, 10786, 11960, 14260, 16120, 18538, 21572, 26965, 28520, 37076, 43144, 46345, 53930, 70109, 74152, 92690, 107860, 124039, 140218, 167183, 185380, 215720, 248078, 280436, 334366, 350545, 370760, 496156, 560872, 620195, 668732, 701090, 835915, 992312, 1240390, 1337464, 1402180, 1612507, 1671830, 2173379, 2480780, 2804360, 3225014, 3343660, 3845209, 4346758, 4961560, 6450028, 6687320, 7690418, 8062535, 8693516, 10866895, 12900056, 15380836, 16125070, 17387032, 19226045, 21733790, 30761672, 32250140, 38452090, 43467580, 49987717, 64500280, 76904180, 86935160, 99975434, 153808360, 199950868, 249938585, 399901736, 499877170, 999754340, 1999508680]

約数ペア:

[(1, 1999508680), (2, 999754340), (4, 499877170), (5, 399901736), (8, 249938585), (10, 199950868), (13, 153808360), (20, 99975434), (23, 86935160), (26, 76904180), (31, 64500280), (40, 49987717), (46, 43467580), (52, 38452090), (62, 32250140), (65, 30761672), (92, 21733790), (104, 19226045), (115, 17387032), (124, 16125070), (130, 15380836), (155, 12900056), (184, 10866895), (230, 8693516), (248, 8062535), (260, 7690418), (299, 6687320), (310, 6450028), (403, 4961560), (460, 4346758), (520, 3845209), (598, 3343660), (620, 3225014), (713, 2804360), (806, 2480780), (920, 2173379), (1196, 1671830), (1240, 1612507), (1426, 1402180), (1495, 1337464), (1612, 1240390), (2015, 992312), (2392, 835915), (2852, 701090), (2990, 668732), (3224, 620195), (3565, 560872), (4030, 496156), (5393, 370760), (5704, 350545), (5980, 334366), (7130, 280436), (8060, 248078), (9269, 215720), (10786, 185380), (11960, 167183), (14260, 140218), (16120, 124039), (18538, 107860), (21572, 92690), (26965, 74152), (28520, 70109), (37076, 53930), (43144, 46345)]