19995000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:103

約数の個数: 160

約数和(自身を含む): 65978880

約数和(自身を除く): 45983880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 31, 40, 43, 50, 60, 62, 75, 86, 93, 100, 120, 124, 125, 129, 150, 155, 172, 186, 200, 215, 248, 250, 258, 300, 310, 344, 372, 375, 430, 465, 500, 516, 600, 620, 625, 645, 744, 750, 775, 860, 930, 1000, 1032, 1075, 1240, 1250, 1290, 1333, 1500, 1550, 1720, 1860, 1875, 2150, 2325, 2500, 2580, 2666, 3000, 3100, 3225, 3720, 3750, 3875, 3999, 4300, 4650, 5000, 5160, 5332, 5375, 6200, 6450, 6665, 7500, 7750, 7998, 8600, 9300, 10664, 10750, 11625, 12900, 13330, 15000, 15500, 15996, 16125, 18600, 19375, 19995, 21500, 23250, 25800, 26660, 26875, 31000, 31992, 32250, 33325, 38750, 39990, 43000, 46500, 53320, 53750, 58125, 64500, 66650, 77500, 79980, 80625, 93000, 99975, 107500, 116250, 129000, 133300, 155000, 159960, 161250, 166625, 199950, 215000, 232500, 266600, 322500, 333250, 399900, 465000, 499875, 645000, 666500, 799800, 833125, 999750, 1333000, 1666250, 1999500, 2499375, 3332500, 3999000, 4998750, 6665000, 9997500, 19995000]

約数ペア:

[(1, 19995000), (2, 9997500), (3, 6665000), (4, 4998750), (5, 3999000), (6, 3332500), (8, 2499375), (10, 1999500), (12, 1666250), (15, 1333000), (20, 999750), (24, 833125), (25, 799800), (30, 666500), (31, 645000), (40, 499875), (43, 465000), (50, 399900), (60, 333250), (62, 322500), (75, 266600), (86, 232500), (93, 215000), (100, 199950), (120, 166625), (124, 161250), (125, 159960), (129, 155000), (150, 133300), (155, 129000), (172, 116250), (186, 107500), (200, 99975), (215, 93000), (248, 80625), (250, 79980), (258, 77500), (300, 66650), (310, 64500), (344, 58125), (372, 53750), (375, 53320), (430, 46500), (465, 43000), (500, 39990), (516, 38750), (600, 33325), (620, 32250), (625, 31992), (645, 31000), (744, 26875), (750, 26660), (775, 25800), (860, 23250), (930, 21500), (1000, 19995), (1032, 19375), (1075, 18600), (1240, 16125), (1250, 15996), (1290, 15500), (1333, 15000), (1500, 13330), (1550, 12900), (1720, 11625), (1860, 10750), (1875, 10664), (2150, 9300), (2325, 8600), (2500, 7998), (2580, 7750), (2666, 7500), (3000, 6665), (3100, 6450), (3225, 6200), (3720, 5375), (3750, 5332), (3875, 5160), (3999, 5000), (4300, 4650)]