642964725

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:536

約数の個数: 108

約数和(自身を含む): 1283527596

約数和(自身を除く): 640562871

約数列:

[1, 3, 5, 9, 13, 15, 25, 37, 39, 45, 65, 75, 111, 117, 169, 185, 195, 225, 325, 333, 457, 481, 507, 555, 585, 845, 925, 975, 1371, 1443, 1521, 1665, 2285, 2405, 2535, 2775, 2925, 4113, 4225, 4329, 5941, 6253, 6855, 7215, 7605, 8325, 11425, 12025, 12675, 16909, 17823, 18759, 20565, 21645, 29705, 31265, 34275, 36075, 38025, 50727, 53469, 56277, 77233, 84545, 89115, 93795, 102825, 108225, 148525, 152181, 156325, 219817, 231699, 253635, 267345, 281385, 386165, 422725, 445575, 468975, 659451, 695097, 760905, 1099085, 1158495, 1268175, 1336725, 1406925, 1930825, 1978353, 2857621, 3297255, 3475485, 3804525, 5495425, 5792475, 8572863, 9891765, 14288105, 16486275, 17377425, 25718589, 42864315, 49458825, 71440525, 128592945, 214321575, 642964725]

約数ペア:

[(1, 642964725), (3, 214321575), (5, 128592945), (9, 71440525), (13, 49458825), (15, 42864315), (25, 25718589), (37, 17377425), (39, 16486275), (45, 14288105), (65, 9891765), (75, 8572863), (111, 5792475), (117, 5495425), (169, 3804525), (185, 3475485), (195, 3297255), (225, 2857621), (325, 1978353), (333, 1930825), (457, 1406925), (481, 1336725), (507, 1268175), (555, 1158495), (585, 1099085), (845, 760905), (925, 695097), (975, 659451), (1371, 468975), (1443, 445575), (1521, 422725), (1665, 386165), (2285, 281385), (2405, 267345), (2535, 253635), (2775, 231699), (2925, 219817), (4113, 156325), (4225, 152181), (4329, 148525), (5941, 108225), (6253, 102825), (6855, 93795), (7215, 89115), (7605, 84545), (8325, 77233), (11425, 56277), (12025, 53469), (12675, 50727), (16909, 38025), (17823, 36075), (18759, 34275), (20565, 31265), (21645, 29705)]