21931190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 22858570

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 71, 79, 85, 115, 142, 158, 170, 230, 355, 391, 395, 710, 782, 790, 1207, 1343, 1633, 1817, 1955, 2414, 2686, 3266, 3634, 3910, 5609, 6035, 6715, 8165, 9085, 11218, 12070, 13430, 16330, 18170, 27761, 28045, 30889, 55522, 56090, 61778, 95353, 129007, 138805, 154445, 190706, 258014, 277610, 308890, 476765, 645035, 953530, 1290070, 2193119, 4386238, 10965595, 21931190]

約数ペア:

[(1, 21931190), (2, 10965595), (5, 4386238), (10, 2193119), (17, 1290070), (23, 953530), (34, 645035), (46, 476765), (71, 308890), (79, 277610), (85, 258014), (115, 190706), (142, 154445), (158, 138805), (170, 129007), (230, 95353), (355, 61778), (391, 56090), (395, 55522), (710, 30889), (782, 28045), (790, 27761), (1207, 18170), (1343, 16330), (1633, 13430), (1817, 12070), (1955, 11218), (2414, 9085), (2686, 8165), (3266, 6715), (3634, 6035), (3910, 5609)]