21531510

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:283

約数の個数: 192

約数和(自身を含む): 75479040

約数和(自身を除く): 53947530

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 18, 21, 22, 26, 30, 33, 35, 39, 42, 45, 55, 63, 65, 66, 70, 77, 78, 90, 91, 99, 105, 110, 117, 126, 130, 143, 154, 165, 182, 195, 198, 210, 231, 234, 239, 273, 286, 315, 330, 385, 390, 429, 455, 462, 478, 495, 546, 585, 630, 693, 715, 717, 770, 819, 858, 910, 990, 1001, 1155, 1170, 1195, 1287, 1365, 1386, 1430, 1434, 1638, 1673, 2002, 2145, 2151, 2310, 2390, 2574, 2629, 2730, 3003, 3107, 3346, 3465, 3585, 4095, 4290, 4302, 5005, 5019, 5258, 6006, 6214, 6435, 6930, 7170, 7887, 8190, 8365, 9009, 9321, 10010, 10038, 10755, 12870, 13145, 15015, 15057, 15535, 15774, 16730, 18018, 18403, 18642, 21510, 21749, 23661, 25095, 26290, 27963, 30030, 30114, 31070, 34177, 36806, 39435, 43498, 45045, 46605, 47322, 50190, 55209, 55926, 65247, 68354, 75285, 78870, 90090, 92015, 93210, 102531, 108745, 110418, 118305, 130494, 139815, 150570, 165627, 170885, 184030, 195741, 205062, 217490, 236610, 239239, 276045, 279630, 307593, 326235, 331254, 341770, 391482, 478478, 512655, 552090, 615186, 652470, 717717, 828135, 978705, 1025310, 1196195, 1435434, 1537965, 1656270, 1957410, 2153151, 2392390, 3075930, 3588585, 4306302, 7177170, 10765755, 21531510]

約数ペア:

[(1, 21531510), (2, 10765755), (3, 7177170), (5, 4306302), (6, 3588585), (7, 3075930), (9, 2392390), (10, 2153151), (11, 1957410), (13, 1656270), (14, 1537965), (15, 1435434), (18, 1196195), (21, 1025310), (22, 978705), (26, 828135), (30, 717717), (33, 652470), (35, 615186), (39, 552090), (42, 512655), (45, 478478), (55, 391482), (63, 341770), (65, 331254), (66, 326235), (70, 307593), (77, 279630), (78, 276045), (90, 239239), (91, 236610), (99, 217490), (105, 205062), (110, 195741), (117, 184030), (126, 170885), (130, 165627), (143, 150570), (154, 139815), (165, 130494), (182, 118305), (195, 110418), (198, 108745), (210, 102531), (231, 93210), (234, 92015), (239, 90090), (273, 78870), (286, 75285), (315, 68354), (330, 65247), (385, 55926), (390, 55209), (429, 50190), (455, 47322), (462, 46605), (478, 45045), (495, 43498), (546, 39435), (585, 36806), (630, 34177), (693, 31070), (715, 30114), (717, 30030), (770, 27963), (819, 26290), (858, 25095), (910, 23661), (990, 21749), (1001, 21510), (1155, 18642), (1170, 18403), (1195, 18018), (1287, 16730), (1365, 15774), (1386, 15535), (1430, 15057), (1434, 15015), (1638, 13145), (1673, 12870), (2002, 10755), (2145, 10038), (2151, 10010), (2310, 9321), (2390, 9009), (2574, 8365), (2629, 8190), (2730, 7887), (3003, 7170), (3107, 6930), (3346, 6435), (3465, 6214), (3585, 6006), (4095, 5258), (4290, 5019), (4302, 5005)]