201500000

素因数分解:

$2^5\times 5^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 168

約数和(自身を含む): 551242944

約数和(自身を除く): 349742944

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 125, 130, 155, 160, 200, 208, 248, 250, 260, 310, 325, 400, 403, 416, 496, 500, 520, 620, 625, 650, 775, 800, 806, 992, 1000, 1040, 1240, 1250, 1300, 1550, 1612, 1625, 2000, 2015, 2080, 2480, 2500, 2600, 3100, 3125, 3224, 3250, 3875, 4000, 4030, 4960, 5000, 5200, 6200, 6250, 6448, 6500, 7750, 8060, 8125, 10000, 10075, 10400, 12400, 12500, 12896, 13000, 15500, 15625, 16120, 16250, 19375, 20000, 20150, 24800, 25000, 26000, 31000, 31250, 32240, 32500, 38750, 40300, 40625, 50000, 50375, 52000, 62000, 62500, 64480, 65000, 77500, 80600, 81250, 96875, 100000, 100750, 124000, 125000, 130000, 155000, 161200, 162500, 193750, 201500, 203125, 250000, 251875, 260000, 310000, 322400, 325000, 387500, 403000, 406250, 484375, 500000, 503750, 620000, 650000, 775000, 806000, 812500, 968750, 1007500, 1259375, 1300000, 1550000, 1612000, 1625000, 1937500, 2015000, 2518750, 3100000, 3250000, 3875000, 4030000, 5037500, 6296875, 6500000, 7750000, 8060000, 10075000, 12593750, 15500000, 20150000, 25187500, 40300000, 50375000, 100750000, 201500000]

約数ペア:

[(1, 201500000), (2, 100750000), (4, 50375000), (5, 40300000), (8, 25187500), (10, 20150000), (13, 15500000), (16, 12593750), (20, 10075000), (25, 8060000), (26, 7750000), (31, 6500000), (32, 6296875), (40, 5037500), (50, 4030000), (52, 3875000), (62, 3250000), (65, 3100000), (80, 2518750), (100, 2015000), (104, 1937500), (124, 1625000), (125, 1612000), (130, 1550000), (155, 1300000), (160, 1259375), (200, 1007500), (208, 968750), (248, 812500), (250, 806000), (260, 775000), (310, 650000), (325, 620000), (400, 503750), (403, 500000), (416, 484375), (496, 406250), (500, 403000), (520, 387500), (620, 325000), (625, 322400), (650, 310000), (775, 260000), (800, 251875), (806, 250000), (992, 203125), (1000, 201500), (1040, 193750), (1240, 162500), (1250, 161200), (1300, 155000), (1550, 130000), (1612, 125000), (1625, 124000), (2000, 100750), (2015, 100000), (2080, 96875), (2480, 81250), (2500, 80600), (2600, 77500), (3100, 65000), (3125, 64480), (3224, 62500), (3250, 62000), (3875, 52000), (4000, 50375), (4030, 50000), (4960, 40625), (5000, 40300), (5200, 38750), (6200, 32500), (6250, 32240), (6448, 31250), (6500, 31000), (7750, 26000), (8060, 25000), (8125, 24800), (10000, 20150), (10075, 20000), (10400, 19375), (12400, 16250), (12500, 16120), (12896, 15625), (13000, 15500)]