1815771520

素因数分解:

$2^7\times 5^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{269}}^1$

素因数の和:540

約数の個数: 128

約数和(自身を含む): 4461480000

約数和(自身を除く): 2645708480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 199, 212, 265, 269, 320, 398, 424, 530, 538, 640, 796, 848, 995, 1060, 1076, 1345, 1592, 1696, 1990, 2120, 2152, 2690, 3184, 3392, 3980, 4240, 4304, 5380, 6368, 6784, 7960, 8480, 8608, 10547, 10760, 12736, 14257, 15920, 16960, 17216, 21094, 21520, 25472, 28514, 31840, 33920, 34432, 42188, 43040, 52735, 53531, 57028, 63680, 71285, 84376, 86080, 105470, 107062, 114056, 127360, 142570, 168752, 172160, 210940, 214124, 228112, 267655, 285140, 337504, 421880, 428248, 456224, 535310, 570280, 675008, 843760, 856496, 912448, 1070620, 1140560, 1350016, 1687520, 1712992, 1824896, 2141240, 2281120, 2837143, 3375040, 3425984, 4282480, 4562240, 5674286, 6750080, 6851968, 8564960, 9124480, 11348572, 14185715, 17129920, 22697144, 28371430, 34259840, 45394288, 56742860, 90788576, 113485720, 181577152, 226971440, 363154304, 453942880, 907885760, 1815771520]

約数ペア:

[(1, 1815771520), (2, 907885760), (4, 453942880), (5, 363154304), (8, 226971440), (10, 181577152), (16, 113485720), (20, 90788576), (32, 56742860), (40, 45394288), (53, 34259840), (64, 28371430), (80, 22697144), (106, 17129920), (128, 14185715), (160, 11348572), (199, 9124480), (212, 8564960), (265, 6851968), (269, 6750080), (320, 5674286), (398, 4562240), (424, 4282480), (530, 3425984), (538, 3375040), (640, 2837143), (796, 2281120), (848, 2141240), (995, 1824896), (1060, 1712992), (1076, 1687520), (1345, 1350016), (1592, 1140560), (1696, 1070620), (1990, 912448), (2120, 856496), (2152, 843760), (2690, 675008), (3184, 570280), (3392, 535310), (3980, 456224), (4240, 428248), (4304, 421880), (5380, 337504), (6368, 285140), (6784, 267655), (7960, 228112), (8480, 214124), (8608, 210940), (10547, 172160), (10760, 168752), (12736, 142570), (14257, 127360), (15920, 114056), (16960, 107062), (17216, 105470), (21094, 86080), (21520, 84376), (25472, 71285), (28514, 63680), (31840, 57028), (33920, 53531), (34432, 52735), (42188, 43040)]