390305500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 144

約数和(自身を含む): 959212800

約数和(自身を除く): 568907300

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 125, 130, 149, 155, 169, 250, 260, 298, 310, 325, 338, 403, 500, 596, 620, 650, 676, 745, 775, 806, 845, 1300, 1490, 1550, 1612, 1625, 1690, 1937, 2015, 2980, 3100, 3250, 3380, 3725, 3874, 3875, 4030, 4225, 4619, 5239, 6500, 7450, 7748, 7750, 8060, 8450, 9238, 9685, 10075, 10478, 14900, 15500, 16900, 18476, 18625, 19370, 20150, 20956, 21125, 23095, 25181, 26195, 37250, 38740, 40300, 42250, 46190, 48425, 50362, 50375, 52390, 60047, 74500, 84500, 92380, 96850, 100724, 100750, 104780, 115475, 120094, 125905, 130975, 193700, 201500, 230950, 240188, 242125, 251810, 261950, 300235, 461900, 484250, 503620, 523900, 577375, 600470, 629525, 654875, 780611, 968500, 1154750, 1200940, 1259050, 1309750, 1501175, 1561222, 2309500, 2518100, 2619500, 3002350, 3122444, 3147625, 3903055, 6004700, 6295250, 7505875, 7806110, 12590500, 15011750, 15612220, 19515275, 30023500, 39030550, 78061100, 97576375, 195152750, 390305500]

約数ペア:

[(1, 390305500), (2, 195152750), (4, 97576375), (5, 78061100), (10, 39030550), (13, 30023500), (20, 19515275), (25, 15612220), (26, 15011750), (31, 12590500), (50, 7806110), (52, 7505875), (62, 6295250), (65, 6004700), (100, 3903055), (124, 3147625), (125, 3122444), (130, 3002350), (149, 2619500), (155, 2518100), (169, 2309500), (250, 1561222), (260, 1501175), (298, 1309750), (310, 1259050), (325, 1200940), (338, 1154750), (403, 968500), (500, 780611), (596, 654875), (620, 629525), (650, 600470), (676, 577375), (745, 523900), (775, 503620), (806, 484250), (845, 461900), (1300, 300235), (1490, 261950), (1550, 251810), (1612, 242125), (1625, 240188), (1690, 230950), (1937, 201500), (2015, 193700), (2980, 130975), (3100, 125905), (3250, 120094), (3380, 115475), (3725, 104780), (3874, 100750), (3875, 100724), (4030, 96850), (4225, 92380), (4619, 84500), (5239, 74500), (6500, 60047), (7450, 52390), (7748, 50375), (7750, 50362), (8060, 48425), (8450, 46190), (9238, 42250), (9685, 40300), (10075, 38740), (10478, 37250), (14900, 26195), (15500, 25181), (16900, 23095), (18476, 21125), (18625, 20956), (19370, 20150)]