81872520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{241}}^1$

素因数の和:423

約数の個数: 128

約数和(自身を含む): 261360000

約数和(自身を除く): 179487480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 149, 152, 190, 228, 241, 285, 298, 380, 447, 456, 482, 570, 596, 723, 745, 760, 894, 964, 1140, 1192, 1205, 1446, 1490, 1788, 1928, 2235, 2280, 2410, 2831, 2892, 2980, 3576, 3615, 4470, 4579, 4820, 5662, 5784, 5960, 7230, 8493, 8940, 9158, 9640, 11324, 13737, 14155, 14460, 16986, 17880, 18316, 22648, 22895, 27474, 28310, 28920, 33972, 35909, 36632, 42465, 45790, 54948, 56620, 67944, 68685, 71818, 84930, 91580, 107727, 109896, 113240, 137370, 143636, 169860, 179545, 183160, 215454, 274740, 287272, 339720, 359090, 430908, 538635, 549480, 682271, 718180, 861816, 1077270, 1364542, 1436360, 2046813, 2154540, 2729084, 3411355, 4093626, 4309080, 5458168, 6822710, 8187252, 10234065, 13645420, 16374504, 20468130, 27290840, 40936260, 81872520]

約数ペア:

[(1, 81872520), (2, 40936260), (3, 27290840), (4, 20468130), (5, 16374504), (6, 13645420), (8, 10234065), (10, 8187252), (12, 6822710), (15, 5458168), (19, 4309080), (20, 4093626), (24, 3411355), (30, 2729084), (38, 2154540), (40, 2046813), (57, 1436360), (60, 1364542), (76, 1077270), (95, 861816), (114, 718180), (120, 682271), (149, 549480), (152, 538635), (190, 430908), (228, 359090), (241, 339720), (285, 287272), (298, 274740), (380, 215454), (447, 183160), (456, 179545), (482, 169860), (570, 143636), (596, 137370), (723, 113240), (745, 109896), (760, 107727), (894, 91580), (964, 84930), (1140, 71818), (1192, 68685), (1205, 67944), (1446, 56620), (1490, 54948), (1788, 45790), (1928, 42465), (2235, 36632), (2280, 35909), (2410, 33972), (2831, 28920), (2892, 28310), (2980, 27474), (3576, 22895), (3615, 22648), (4470, 18316), (4579, 17880), (4820, 16986), (5662, 14460), (5784, 14155), (5960, 13737), (7230, 11324), (8493, 9640), (8940, 9158)]