15987990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:126

約数の個数: 128

約数和(自身を含む): 44789760

約数和(自身を除く): 28801770

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 29, 30, 34, 46, 47, 51, 58, 69, 85, 87, 94, 102, 115, 138, 141, 145, 170, 174, 230, 235, 255, 282, 290, 345, 391, 435, 470, 493, 510, 667, 690, 705, 782, 799, 870, 986, 1081, 1173, 1334, 1363, 1410, 1479, 1598, 1955, 2001, 2162, 2346, 2397, 2465, 2726, 2958, 3243, 3335, 3910, 3995, 4002, 4089, 4794, 4930, 5405, 5865, 6486, 6670, 6815, 7395, 7990, 8178, 10005, 10810, 11339, 11730, 11985, 13630, 14790, 16215, 18377, 20010, 20445, 22678, 23171, 23970, 31349, 32430, 34017, 36754, 40890, 46342, 55131, 56695, 62698, 68034, 69513, 91885, 94047, 110262, 113390, 115855, 139026, 156745, 170085, 183770, 188094, 231710, 275655, 313490, 340170, 347565, 470235, 532933, 551310, 695130, 940470, 1065866, 1598799, 2664665, 3197598, 5329330, 7993995, 15987990]

約数ペア:

[(1, 15987990), (2, 7993995), (3, 5329330), (5, 3197598), (6, 2664665), (10, 1598799), (15, 1065866), (17, 940470), (23, 695130), (29, 551310), (30, 532933), (34, 470235), (46, 347565), (47, 340170), (51, 313490), (58, 275655), (69, 231710), (85, 188094), (87, 183770), (94, 170085), (102, 156745), (115, 139026), (138, 115855), (141, 113390), (145, 110262), (170, 94047), (174, 91885), (230, 69513), (235, 68034), (255, 62698), (282, 56695), (290, 55131), (345, 46342), (391, 40890), (435, 36754), (470, 34017), (493, 32430), (510, 31349), (667, 23970), (690, 23171), (705, 22678), (782, 20445), (799, 20010), (870, 18377), (986, 16215), (1081, 14790), (1173, 13630), (1334, 11985), (1363, 11730), (1410, 11339), (1479, 10810), (1598, 10005), (1955, 8178), (2001, 7990), (2162, 7395), (2346, 6815), (2397, 6670), (2465, 6486), (2726, 5865), (2958, 5405), (3243, 4930), (3335, 4794), (3910, 4089), (3995, 4002)]