20578500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{269}}^1$

素因数の和:311

約数の個数: 144

約数和(自身を含む): 68992560

約数和(自身を除く): 48414060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 30, 34, 36, 45, 50, 51, 60, 68, 75, 85, 90, 100, 102, 125, 150, 153, 170, 180, 204, 225, 250, 255, 269, 300, 306, 340, 375, 425, 450, 500, 510, 538, 612, 750, 765, 807, 850, 900, 1020, 1076, 1125, 1275, 1345, 1500, 1530, 1614, 1700, 2125, 2250, 2421, 2550, 2690, 3060, 3228, 3825, 4035, 4250, 4500, 4573, 4842, 5100, 5380, 6375, 6725, 7650, 8070, 8500, 9146, 9684, 12105, 12750, 13450, 13719, 15300, 16140, 18292, 19125, 20175, 22865, 24210, 25500, 26900, 27438, 33625, 38250, 40350, 41157, 45730, 48420, 54876, 60525, 67250, 68595, 76500, 80700, 82314, 91460, 100875, 114325, 121050, 134500, 137190, 164628, 201750, 205785, 228650, 242100, 274380, 302625, 342975, 403500, 411570, 457300, 571625, 605250, 685950, 823140, 1028925, 1143250, 1210500, 1371900, 1714875, 2057850, 2286500, 3429750, 4115700, 5144625, 6859500, 10289250, 20578500]

約数ペア:

[(1, 20578500), (2, 10289250), (3, 6859500), (4, 5144625), (5, 4115700), (6, 3429750), (9, 2286500), (10, 2057850), (12, 1714875), (15, 1371900), (17, 1210500), (18, 1143250), (20, 1028925), (25, 823140), (30, 685950), (34, 605250), (36, 571625), (45, 457300), (50, 411570), (51, 403500), (60, 342975), (68, 302625), (75, 274380), (85, 242100), (90, 228650), (100, 205785), (102, 201750), (125, 164628), (150, 137190), (153, 134500), (170, 121050), (180, 114325), (204, 100875), (225, 91460), (250, 82314), (255, 80700), (269, 76500), (300, 68595), (306, 67250), (340, 60525), (375, 54876), (425, 48420), (450, 45730), (500, 41157), (510, 40350), (538, 38250), (612, 33625), (750, 27438), (765, 26900), (807, 25500), (850, 24210), (900, 22865), (1020, 20175), (1076, 19125), (1125, 18292), (1275, 16140), (1345, 15300), (1500, 13719), (1530, 13450), (1614, 12750), (1700, 12105), (2125, 9684), (2250, 9146), (2421, 8500), (2550, 8070), (2690, 7650), (3060, 6725), (3228, 6375), (3825, 5380), (4035, 5100), (4250, 4842), (4500, 4573)]