21419280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:509

約数の個数: 120

約数和(自身を含む): 73120320

約数和(自身を除く): 51701040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 71, 72, 80, 90, 120, 142, 144, 180, 213, 240, 284, 355, 360, 419, 426, 568, 639, 710, 720, 838, 852, 1065, 1136, 1257, 1278, 1420, 1676, 1704, 2095, 2130, 2514, 2556, 2840, 3195, 3352, 3408, 3771, 4190, 4260, 5028, 5112, 5680, 6285, 6390, 6704, 7542, 8380, 8520, 10056, 10224, 12570, 12780, 15084, 16760, 17040, 18855, 20112, 25140, 25560, 29749, 30168, 33520, 37710, 50280, 51120, 59498, 60336, 75420, 89247, 100560, 118996, 148745, 150840, 178494, 237992, 267741, 297490, 301680, 356988, 446235, 475984, 535482, 594980, 713976, 892470, 1070964, 1189960, 1338705, 1427952, 1784940, 2141928, 2379920, 2677410, 3569880, 4283856, 5354820, 7139760, 10709640, 21419280]

約数ペア:

[(1, 21419280), (2, 10709640), (3, 7139760), (4, 5354820), (5, 4283856), (6, 3569880), (8, 2677410), (9, 2379920), (10, 2141928), (12, 1784940), (15, 1427952), (16, 1338705), (18, 1189960), (20, 1070964), (24, 892470), (30, 713976), (36, 594980), (40, 535482), (45, 475984), (48, 446235), (60, 356988), (71, 301680), (72, 297490), (80, 267741), (90, 237992), (120, 178494), (142, 150840), (144, 148745), (180, 118996), (213, 100560), (240, 89247), (284, 75420), (355, 60336), (360, 59498), (419, 51120), (426, 50280), (568, 37710), (639, 33520), (710, 30168), (720, 29749), (838, 25560), (852, 25140), (1065, 20112), (1136, 18855), (1257, 17040), (1278, 16760), (1420, 15084), (1676, 12780), (1704, 12570), (2095, 10224), (2130, 10056), (2514, 8520), (2556, 8380), (2840, 7542), (3195, 6704), (3352, 6390), (3408, 6285), (3771, 5680), (4190, 5112), (4260, 5028)]