20849500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:93

約数の個数: 144

約数和(自身を含む): 56766528

約数和(自身を除く): 35917028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 37, 46, 49, 50, 70, 74, 92, 98, 100, 115, 125, 140, 148, 161, 175, 185, 196, 230, 245, 250, 259, 322, 350, 370, 460, 490, 500, 518, 575, 644, 700, 740, 805, 851, 875, 925, 980, 1036, 1127, 1150, 1225, 1295, 1610, 1702, 1750, 1813, 1850, 2254, 2300, 2450, 2590, 2875, 3220, 3404, 3500, 3626, 3700, 4025, 4255, 4508, 4625, 4900, 5180, 5635, 5750, 5957, 6125, 6475, 7252, 8050, 8510, 9065, 9250, 11270, 11500, 11914, 12250, 12950, 16100, 17020, 18130, 18500, 20125, 21275, 22540, 23828, 24500, 25900, 28175, 29785, 32375, 36260, 40250, 41699, 42550, 45325, 56350, 59570, 64750, 80500, 83398, 85100, 90650, 106375, 112700, 119140, 129500, 140875, 148925, 166796, 181300, 208495, 212750, 226625, 281750, 297850, 416990, 425500, 453250, 563500, 595700, 744625, 833980, 906500, 1042475, 1489250, 2084950, 2978500, 4169900, 5212375, 10424750, 20849500]

約数ペア:

[(1, 20849500), (2, 10424750), (4, 5212375), (5, 4169900), (7, 2978500), (10, 2084950), (14, 1489250), (20, 1042475), (23, 906500), (25, 833980), (28, 744625), (35, 595700), (37, 563500), (46, 453250), (49, 425500), (50, 416990), (70, 297850), (74, 281750), (92, 226625), (98, 212750), (100, 208495), (115, 181300), (125, 166796), (140, 148925), (148, 140875), (161, 129500), (175, 119140), (185, 112700), (196, 106375), (230, 90650), (245, 85100), (250, 83398), (259, 80500), (322, 64750), (350, 59570), (370, 56350), (460, 45325), (490, 42550), (500, 41699), (518, 40250), (575, 36260), (644, 32375), (700, 29785), (740, 28175), (805, 25900), (851, 24500), (875, 23828), (925, 22540), (980, 21275), (1036, 20125), (1127, 18500), (1150, 18130), (1225, 17020), (1295, 16100), (1610, 12950), (1702, 12250), (1750, 11914), (1813, 11500), (1850, 11270), (2254, 9250), (2300, 9065), (2450, 8510), (2590, 8050), (2875, 7252), (3220, 6475), (3404, 6125), (3500, 5957), (3626, 5750), (3700, 5635), (4025, 5180), (4255, 4900), (4508, 4625)]