29991000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{769}}^1$

素因数の和:806

約数の個数: 128

約数和(自身を含む): 100900800

約数和(自身を除く): 70909800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 120, 125, 130, 150, 156, 195, 200, 250, 260, 300, 312, 325, 375, 390, 500, 520, 600, 650, 750, 769, 780, 975, 1000, 1300, 1500, 1538, 1560, 1625, 1950, 2307, 2600, 3000, 3076, 3250, 3845, 3900, 4614, 4875, 6152, 6500, 7690, 7800, 9228, 9750, 9997, 11535, 13000, 15380, 18456, 19225, 19500, 19994, 23070, 29991, 30760, 38450, 39000, 39988, 46140, 49985, 57675, 59982, 76900, 79976, 92280, 96125, 99970, 115350, 119964, 149955, 153800, 192250, 199940, 230700, 239928, 249925, 288375, 299910, 384500, 399880, 461400, 499850, 576750, 599820, 749775, 769000, 999700, 1153500, 1199640, 1249625, 1499550, 1999400, 2307000, 2499250, 2999100, 3748875, 4998500, 5998200, 7497750, 9997000, 14995500, 29991000]

約数ペア:

[(1, 29991000), (2, 14995500), (3, 9997000), (4, 7497750), (5, 5998200), (6, 4998500), (8, 3748875), (10, 2999100), (12, 2499250), (13, 2307000), (15, 1999400), (20, 1499550), (24, 1249625), (25, 1199640), (26, 1153500), (30, 999700), (39, 769000), (40, 749775), (50, 599820), (52, 576750), (60, 499850), (65, 461400), (75, 399880), (78, 384500), (100, 299910), (104, 288375), (120, 249925), (125, 239928), (130, 230700), (150, 199940), (156, 192250), (195, 153800), (200, 149955), (250, 119964), (260, 115350), (300, 99970), (312, 96125), (325, 92280), (375, 79976), (390, 76900), (500, 59982), (520, 57675), (600, 49985), (650, 46140), (750, 39988), (769, 39000), (780, 38450), (975, 30760), (1000, 29991), (1300, 23070), (1500, 19994), (1538, 19500), (1560, 19225), (1625, 18456), (1950, 15380), (2307, 13000), (2600, 11535), (3000, 9997), (3076, 9750), (3250, 9228), (3845, 7800), (3900, 7690), (4614, 6500), (4875, 6152)]