16404577960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{947}}^1\times {\mathrm{991}}^1$

素因数の和:1991

約数の個数: 128

約数和(自身を含む): 40625971200

約数和(自身を除く): 24221393240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 947, 991, 1748, 1894, 1982, 2185, 3496, 3788, 3964, 4370, 4735, 4955, 7576, 7928, 8740, 9470, 9910, 17480, 17993, 18829, 18940, 19820, 21781, 22793, 35986, 37658, 37880, 39640, 43562, 45586, 71972, 75316, 87124, 89965, 91172, 94145, 108905, 113965, 143944, 150632, 174248, 179930, 182344, 188290, 217810, 227930, 359860, 376580, 413839, 433067, 435620, 455860, 719720, 753160, 827678, 866134, 871240, 911720, 938477, 1655356, 1732268, 1876954, 2069195, 2165335, 3310712, 3464536, 3753908, 4138390, 4330670, 4692385, 7507816, 8276780, 8661340, 9384770, 16553560, 17322680, 17831063, 18769540, 21584971, 35662126, 37539080, 43169942, 71324252, 86339884, 89155315, 107924855, 142648504, 172679768, 178310630, 215849710, 356621260, 410114449, 431699420, 713242520, 820228898, 863398840, 1640457796, 2050572245, 3280915592, 4101144490, 8202288980, 16404577960]

約数ペア:

[(1, 16404577960), (2, 8202288980), (4, 4101144490), (5, 3280915592), (8, 2050572245), (10, 1640457796), (19, 863398840), (20, 820228898), (23, 713242520), (38, 431699420), (40, 410114449), (46, 356621260), (76, 215849710), (92, 178310630), (95, 172679768), (115, 142648504), (152, 107924855), (184, 89155315), (190, 86339884), (230, 71324252), (380, 43169942), (437, 37539080), (460, 35662126), (760, 21584971), (874, 18769540), (920, 17831063), (947, 17322680), (991, 16553560), (1748, 9384770), (1894, 8661340), (1982, 8276780), (2185, 7507816), (3496, 4692385), (3788, 4330670), (3964, 4138390), (4370, 3753908), (4735, 3464536), (4955, 3310712), (7576, 2165335), (7928, 2069195), (8740, 1876954), (9470, 1732268), (9910, 1655356), (17480, 938477), (17993, 911720), (18829, 871240), (18940, 866134), (19820, 827678), (21781, 753160), (22793, 719720), (35986, 455860), (37658, 435620), (37880, 433067), (39640, 413839), (43562, 376580), (45586, 359860), (71972, 227930), (75316, 217810), (87124, 188290), (89965, 182344), (91172, 179930), (94145, 174248), (108905, 150632), (113965, 143944)]