19212830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:561

約数の個数: 64

約数和(自身を含む): 43642368

約数和(自身を除く): 24429538

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 43, 65, 70, 86, 91, 130, 182, 215, 301, 430, 455, 491, 559, 602, 910, 982, 1118, 1505, 2455, 2795, 3010, 3437, 3913, 4910, 5590, 6383, 6874, 7826, 12766, 17185, 19565, 21113, 31915, 34370, 39130, 42226, 44681, 63830, 89362, 105565, 147791, 211130, 223405, 274469, 295582, 446810, 548938, 738955, 1372345, 1477910, 1921283, 2744690, 3842566, 9606415, 19212830]

約数ペア:

[(1, 19212830), (2, 9606415), (5, 3842566), (7, 2744690), (10, 1921283), (13, 1477910), (14, 1372345), (26, 738955), (35, 548938), (43, 446810), (65, 295582), (70, 274469), (86, 223405), (91, 211130), (130, 147791), (182, 105565), (215, 89362), (301, 63830), (430, 44681), (455, 42226), (491, 39130), (559, 34370), (602, 31915), (910, 21113), (982, 19565), (1118, 17185), (1505, 12766), (2455, 7826), (2795, 6874), (3010, 6383), (3437, 5590), (3913, 4910)]