40300000

素因数分解:

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

素因数の和:79

約数の個数: 144

約数和(自身を含む): 110242944

約数和(自身を除く): 69942944

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, 16120, 16250, 19375, 20000, 20150, 24800, 25000, 26000, 31000, 32240, 32500, 38750, 40300, 40625, 50000, 50375, 52000, 62000, 64480, 65000, 77500, 80600, 81250, 96875, 100000, 100750, 124000, 130000, 155000, 161200, 162500, 193750, 201500, 251875, 260000, 310000, 322400, 325000, 387500, 403000, 503750, 620000, 650000, 775000, 806000, 1007500, 1259375, 1300000, 1550000, 1612000, 2015000, 2518750, 3100000, 4030000, 5037500, 8060000, 10075000, 20150000, 40300000]

約数ペア:

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