639450

素因数分解:

$2^1\times 3^2\times 5^2\times 7^2\times {\mathrm{29}}^1$

素因数の和:61

約数の個数: 108

約数和(自身を含む): 2067390

約数和(自身を除く): 1427940

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 29, 30, 35, 42, 45, 49, 50, 58, 63, 70, 75, 87, 90, 98, 105, 126, 145, 147, 150, 174, 175, 203, 210, 225, 245, 261, 290, 294, 315, 350, 406, 435, 441, 450, 490, 522, 525, 609, 630, 725, 735, 870, 882, 1015, 1050, 1218, 1225, 1305, 1421, 1450, 1470, 1575, 1827, 2030, 2175, 2205, 2450, 2610, 2842, 3045, 3150, 3654, 3675, 4263, 4350, 4410, 5075, 6090, 6525, 7105, 7350, 8526, 9135, 10150, 11025, 12789, 13050, 14210, 15225, 18270, 21315, 22050, 25578, 30450, 35525, 42630, 45675, 63945, 71050, 91350, 106575, 127890, 213150, 319725, 639450]

約数ペア:

[(1, 639450), (2, 319725), (3, 213150), (5, 127890), (6, 106575), (7, 91350), (9, 71050), (10, 63945), (14, 45675), (15, 42630), (18, 35525), (21, 30450), (25, 25578), (29, 22050), (30, 21315), (35, 18270), (42, 15225), (45, 14210), (49, 13050), (50, 12789), (58, 11025), (63, 10150), (70, 9135), (75, 8526), (87, 7350), (90, 7105), (98, 6525), (105, 6090), (126, 5075), (145, 4410), (147, 4350), (150, 4263), (174, 3675), (175, 3654), (203, 3150), (210, 3045), (225, 2842), (245, 2610), (261, 2450), (290, 2205), (294, 2175), (315, 2030), (350, 1827), (406, 1575), (435, 1470), (441, 1450), (450, 1421), (490, 1305), (522, 1225), (525, 1218), (609, 1050), (630, 1015), (725, 882), (735, 870)]