21072474865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{4391}}^1$

素因数の和:4570

約数の個数: 64

約数和(自身を含む): 29803479552

約数和(自身を除く): 8731004687

約数列:

[1, 5, 13, 17, 43, 65, 85, 101, 215, 221, 505, 559, 731, 1105, 1313, 1717, 2795, 3655, 4343, 4391, 6565, 8585, 9503, 21715, 21955, 22321, 47515, 56459, 57083, 73831, 74647, 111605, 188813, 282295, 285415, 369155, 373235, 443491, 944065, 959803, 970411, 2217455, 2454569, 3209821, 4799015, 4852055, 5765383, 7539347, 12272845, 16049105, 19070113, 28826915, 37696735, 41727673, 95350565, 98011511, 208638365, 247911469, 324191921, 490057555, 1239557345, 1620959605, 4214494973, 21072474865]

約数ペア:

[(1, 21072474865), (5, 4214494973), (13, 1620959605), (17, 1239557345), (43, 490057555), (65, 324191921), (85, 247911469), (101, 208638365), (215, 98011511), (221, 95350565), (505, 41727673), (559, 37696735), (731, 28826915), (1105, 19070113), (1313, 16049105), (1717, 12272845), (2795, 7539347), (3655, 5765383), (4343, 4852055), (4391, 4799015), (6565, 3209821), (8585, 2454569), (9503, 2217455), (21715, 970411), (21955, 959803), (22321, 944065), (47515, 443491), (56459, 373235), (57083, 369155), (73831, 285415), (74647, 282295), (111605, 188813)]