28756215

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:174

約数の個数: 80

約数和(自身を含む): 56279520

約数和(自身を除く): 27523305

約数列:

[1, 3, 5, 9, 15, 19, 27, 37, 45, 57, 81, 95, 101, 111, 135, 171, 185, 285, 303, 333, 405, 505, 513, 555, 703, 855, 909, 999, 1515, 1539, 1665, 1919, 2109, 2565, 2727, 2997, 3515, 3737, 4545, 4995, 5757, 6327, 7695, 8181, 9595, 10545, 11211, 13635, 14985, 17271, 18685, 18981, 28785, 31635, 33633, 40905, 51813, 56055, 56943, 71003, 86355, 94905, 100899, 155439, 168165, 213009, 259065, 284715, 302697, 355015, 504495, 639027, 777195, 1065045, 1513485, 1917081, 3195135, 5751243, 9585405, 28756215]

約数ペア:

[(1, 28756215), (3, 9585405), (5, 5751243), (9, 3195135), (15, 1917081), (19, 1513485), (27, 1065045), (37, 777195), (45, 639027), (57, 504495), (81, 355015), (95, 302697), (101, 284715), (111, 259065), (135, 213009), (171, 168165), (185, 155439), (285, 100899), (303, 94905), (333, 86355), (405, 71003), (505, 56943), (513, 56055), (555, 51813), (703, 40905), (855, 33633), (909, 31635), (999, 28785), (1515, 18981), (1539, 18685), (1665, 17271), (1919, 14985), (2109, 13635), (2565, 11211), (2727, 10545), (2997, 9595), (3515, 8181), (3737, 7695), (4545, 6327), (4995, 5757)]