21027357040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1823}}^1\times {\mathrm{4651}}^1$

素因数の和:6518

約数の個数: 80

約数和(自身を含む): 50504196096

約数和(自身を除く): 29476839056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 1823, 2480, 3646, 4651, 7292, 9115, 9302, 14584, 18230, 18604, 23255, 29168, 36460, 37208, 46510, 56513, 72920, 74416, 93020, 113026, 144181, 145840, 186040, 226052, 282565, 288362, 372080, 452104, 565130, 576724, 720905, 904208, 1130260, 1153448, 1441810, 2260520, 2306896, 2883620, 4521040, 5767240, 8478773, 11534480, 16957546, 33915092, 42393865, 67830184, 84787730, 135660368, 169575460, 262841963, 339150920, 525683926, 678301840, 1051367852, 1314209815, 2102735704, 2628419630, 4205471408, 5256839260, 10513678520, 21027357040]

約数ペア:

[(1, 21027357040), (2, 10513678520), (4, 5256839260), (5, 4205471408), (8, 2628419630), (10, 2102735704), (16, 1314209815), (20, 1051367852), (31, 678301840), (40, 525683926), (62, 339150920), (80, 262841963), (124, 169575460), (155, 135660368), (248, 84787730), (310, 67830184), (496, 42393865), (620, 33915092), (1240, 16957546), (1823, 11534480), (2480, 8478773), (3646, 5767240), (4651, 4521040), (7292, 2883620), (9115, 2306896), (9302, 2260520), (14584, 1441810), (18230, 1153448), (18604, 1130260), (23255, 904208), (29168, 720905), (36460, 576724), (37208, 565130), (46510, 452104), (56513, 372080), (72920, 288362), (74416, 282565), (93020, 226052), (113026, 186040), (144181, 145840)]