4145620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 9389520

約数和(自身を除く): 5243900

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 137, 170, 178, 274, 340, 356, 445, 548, 685, 890, 1370, 1513, 1780, 2329, 2740, 3026, 4658, 6052, 7565, 9316, 11645, 12193, 15130, 23290, 24386, 30260, 46580, 48772, 60965, 121930, 207281, 243860, 414562, 829124, 1036405, 2072810, 4145620]

約数ペア:

[(1, 4145620), (2, 2072810), (4, 1036405), (5, 829124), (10, 414562), (17, 243860), (20, 207281), (34, 121930), (68, 60965), (85, 48772), (89, 46580), (137, 30260), (170, 24386), (178, 23290), (274, 15130), (340, 12193), (356, 11645), (445, 9316), (548, 7565), (685, 6052), (890, 4658), (1370, 3026), (1513, 2740), (1780, 2329)]