18735990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6863}}^1$

素因数の和:6893

約数の個数: 64

約数和(自身を含む): 55351296

約数和(自身を除く): 36615306

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 6863, 13726, 20589, 34315, 41178, 48041, 68630, 89219, 96082, 102945, 144123, 178438, 205890, 240205, 267657, 288246, 446095, 480410, 535314, 624533, 720615, 892190, 1249066, 1338285, 1441230, 1873599, 2676570, 3122665, 3747198, 6245330, 9367995, 18735990]

約数ペア:

[(1, 18735990), (2, 9367995), (3, 6245330), (5, 3747198), (6, 3122665), (7, 2676570), (10, 1873599), (13, 1441230), (14, 1338285), (15, 1249066), (21, 892190), (26, 720615), (30, 624533), (35, 535314), (39, 480410), (42, 446095), (65, 288246), (70, 267657), (78, 240205), (91, 205890), (105, 178438), (130, 144123), (182, 102945), (195, 96082), (210, 89219), (273, 68630), (390, 48041), (455, 41178), (546, 34315), (910, 20589), (1365, 13726), (2730, 6863)]