20768930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{787}}^1$

素因数の和:843

約数の個数: 64

約数和(自身を含む): 47658240

約数和(自身を除く): 26889310

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 29, 35, 58, 65, 70, 91, 130, 145, 182, 203, 290, 377, 406, 455, 754, 787, 910, 1015, 1574, 1885, 2030, 2639, 3770, 3935, 5278, 5509, 7870, 10231, 11018, 13195, 20462, 22823, 26390, 27545, 45646, 51155, 55090, 71617, 102310, 114115, 143234, 159761, 228230, 296699, 319522, 358085, 593398, 716170, 798805, 1483495, 1597610, 2076893, 2966990, 4153786, 10384465, 20768930]

約数ペア:

[(1, 20768930), (2, 10384465), (5, 4153786), (7, 2966990), (10, 2076893), (13, 1597610), (14, 1483495), (26, 798805), (29, 716170), (35, 593398), (58, 358085), (65, 319522), (70, 296699), (91, 228230), (130, 159761), (145, 143234), (182, 114115), (203, 102310), (290, 71617), (377, 55090), (406, 51155), (455, 45646), (754, 27545), (787, 26390), (910, 22823), (1015, 20462), (1574, 13195), (1885, 11018), (2030, 10231), (2639, 7870), (3770, 5509), (3935, 5278)]