648445140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{514639}}^1$

素因数の和:514661

約数の個数: 72

約数和(自身を含む): 2247947520

約数和(自身を除く): 1599502380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 514639, 1029278, 1543917, 2058556, 2573195, 3087834, 3602473, 4631751, 5146390, 6175668, 7204946, 7719585, 9263502, 10292780, 10807419, 14409892, 15439170, 18012365, 18527004, 21614838, 23158755, 30878340, 32422257, 36024730, 43229676, 46317510, 54037095, 64844514, 72049460, 92635020, 108074190, 129689028, 162111285, 216148380, 324222570, 648445140]

約数ペア:

[(1, 648445140), (2, 324222570), (3, 216148380), (4, 162111285), (5, 129689028), (6, 108074190), (7, 92635020), (9, 72049460), (10, 64844514), (12, 54037095), (14, 46317510), (15, 43229676), (18, 36024730), (20, 32422257), (21, 30878340), (28, 23158755), (30, 21614838), (35, 18527004), (36, 18012365), (42, 15439170), (45, 14409892), (60, 10807419), (63, 10292780), (70, 9263502), (84, 7719585), (90, 7204946), (105, 6175668), (126, 5146390), (140, 4631751), (180, 3602473), (210, 3087834), (252, 2573195), (315, 2058556), (420, 1543917), (630, 1029278), (1260, 514639)]