21417120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 74299680

約数和(自身を除く): 52882560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 107, 120, 139, 144, 160, 180, 214, 240, 278, 288, 321, 360, 417, 428, 480, 535, 556, 642, 695, 720, 834, 856, 963, 1070, 1112, 1251, 1284, 1390, 1440, 1605, 1668, 1712, 1926, 2085, 2140, 2224, 2502, 2568, 2780, 3210, 3336, 3424, 3852, 4170, 4280, 4448, 4815, 5004, 5136, 5560, 6255, 6420, 6672, 7704, 8340, 8560, 9630, 10008, 10272, 11120, 12510, 12840, 13344, 14873, 15408, 16680, 17120, 19260, 20016, 22240, 25020, 25680, 29746, 30816, 33360, 38520, 40032, 44619, 50040, 51360, 59492, 66720, 74365, 77040, 89238, 100080, 118984, 133857, 148730, 154080, 178476, 200160, 223095, 237968, 267714, 297460, 356952, 446190, 475936, 535428, 594920, 669285, 713904, 892380, 1070856, 1189840, 1338570, 1427808, 1784760, 2141712, 2379680, 2677140, 3569520, 4283424, 5354280, 7139040, 10708560, 21417120]

約数ペア:

[(1, 21417120), (2, 10708560), (3, 7139040), (4, 5354280), (5, 4283424), (6, 3569520), (8, 2677140), (9, 2379680), (10, 2141712), (12, 1784760), (15, 1427808), (16, 1338570), (18, 1189840), (20, 1070856), (24, 892380), (30, 713904), (32, 669285), (36, 594920), (40, 535428), (45, 475936), (48, 446190), (60, 356952), (72, 297460), (80, 267714), (90, 237968), (96, 223095), (107, 200160), (120, 178476), (139, 154080), (144, 148730), (160, 133857), (180, 118984), (214, 100080), (240, 89238), (278, 77040), (288, 74365), (321, 66720), (360, 59492), (417, 51360), (428, 50040), (480, 44619), (535, 40032), (556, 38520), (642, 33360), (695, 30816), (720, 29746), (834, 25680), (856, 25020), (963, 22240), (1070, 20016), (1112, 19260), (1251, 17120), (1284, 16680), (1390, 15408), (1440, 14873), (1605, 13344), (1668, 12840), (1712, 12510), (1926, 11120), (2085, 10272), (2140, 10008), (2224, 9630), (2502, 8560), (2568, 8340), (2780, 7704), (3210, 6672), (3336, 6420), (3424, 6255), (3852, 5560), (4170, 5136), (4280, 5004), (4448, 4815)]