721000480

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2383}}^1$

素因数の和:2490

約数の個数: 96

約数和(自身を含む): 1787885568

約数和(自身を除く): 1066885088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 80, 122, 124, 155, 160, 244, 248, 305, 310, 488, 496, 610, 620, 976, 992, 1220, 1240, 1891, 1952, 2383, 2440, 2480, 3782, 4766, 4880, 4960, 7564, 9455, 9532, 9760, 11915, 15128, 18910, 19064, 23830, 30256, 37820, 38128, 47660, 60512, 73873, 75640, 76256, 95320, 145363, 147746, 151280, 190640, 290726, 295492, 302560, 369365, 381280, 581452, 590984, 726815, 738730, 1162904, 1181968, 1453630, 1477460, 2325808, 2363936, 2907260, 2954920, 4506253, 4651616, 5814520, 5909840, 9012506, 11629040, 11819680, 18025012, 22531265, 23258080, 36050024, 45062530, 72100048, 90125060, 144200096, 180250120, 360500240, 721000480]

約数ペア:

[(1, 721000480), (2, 360500240), (4, 180250120), (5, 144200096), (8, 90125060), (10, 72100048), (16, 45062530), (20, 36050024), (31, 23258080), (32, 22531265), (40, 18025012), (61, 11819680), (62, 11629040), (80, 9012506), (122, 5909840), (124, 5814520), (155, 4651616), (160, 4506253), (244, 2954920), (248, 2907260), (305, 2363936), (310, 2325808), (488, 1477460), (496, 1453630), (610, 1181968), (620, 1162904), (976, 738730), (992, 726815), (1220, 590984), (1240, 581452), (1891, 381280), (1952, 369365), (2383, 302560), (2440, 295492), (2480, 290726), (3782, 190640), (4766, 151280), (4880, 147746), (4960, 145363), (7564, 95320), (9455, 76256), (9532, 75640), (9760, 73873), (11915, 60512), (15128, 47660), (18910, 38128), (19064, 37820), (23830, 30256)]