640937520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1931}}^1$

素因数の和:2411

約数の個数: 120

約数和(自身を含む): 2158268112

約数和(自身を除く): 1517330592

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 461, 720, 922, 1383, 1844, 1931, 2305, 2766, 3688, 3862, 4149, 4610, 5532, 5793, 6915, 7376, 7724, 8298, 9220, 9655, 11064, 11586, 13830, 15448, 16596, 17379, 18440, 19310, 20745, 22128, 23172, 27660, 28965, 30896, 33192, 34758, 36880, 38620, 41490, 46344, 55320, 57930, 66384, 69516, 77240, 82980, 86895, 92688, 110640, 115860, 139032, 154480, 165960, 173790, 231720, 278064, 331920, 347580, 463440, 695160, 890191, 1390320, 1780382, 2670573, 3560764, 4450955, 5341146, 7121528, 8011719, 8901910, 10682292, 13352865, 14243056, 16023438, 17803820, 21364584, 26705730, 32046876, 35607640, 40058595, 42729168, 53411460, 64093752, 71215280, 80117190, 106822920, 128187504, 160234380, 213645840, 320468760, 640937520]

約数ペア:

[(1, 640937520), (2, 320468760), (3, 213645840), (4, 160234380), (5, 128187504), (6, 106822920), (8, 80117190), (9, 71215280), (10, 64093752), (12, 53411460), (15, 42729168), (16, 40058595), (18, 35607640), (20, 32046876), (24, 26705730), (30, 21364584), (36, 17803820), (40, 16023438), (45, 14243056), (48, 13352865), (60, 10682292), (72, 8901910), (80, 8011719), (90, 7121528), (120, 5341146), (144, 4450955), (180, 3560764), (240, 2670573), (360, 1780382), (461, 1390320), (720, 890191), (922, 695160), (1383, 463440), (1844, 347580), (1931, 331920), (2305, 278064), (2766, 231720), (3688, 173790), (3862, 165960), (4149, 154480), (4610, 139032), (5532, 115860), (5793, 110640), (6915, 92688), (7376, 86895), (7724, 82980), (8298, 77240), (9220, 69516), (9655, 66384), (11064, 57930), (11586, 55320), (13830, 46344), (15448, 41490), (16596, 38620), (17379, 36880), (18440, 34758), (19310, 33192), (20745, 30896), (22128, 28965), (23172, 27660)]