640255320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6661}}^1$

素因数の和:6770

約数の個数: 128

約数和(自身を含む): 2158488000

約数和(自身を除く): 1518232680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 89, 90, 108, 120, 135, 178, 180, 216, 267, 270, 356, 360, 445, 534, 540, 712, 801, 890, 1068, 1080, 1335, 1602, 1780, 2136, 2403, 2670, 3204, 3560, 4005, 4806, 5340, 6408, 6661, 8010, 9612, 10680, 12015, 13322, 16020, 19224, 19983, 24030, 26644, 32040, 33305, 39966, 48060, 53288, 59949, 66610, 79932, 96120, 99915, 119898, 133220, 159864, 179847, 199830, 239796, 266440, 299745, 359694, 399660, 479592, 592829, 599490, 719388, 799320, 899235, 1185658, 1198980, 1438776, 1778487, 1798470, 2371316, 2397960, 2964145, 3556974, 3596940, 4742632, 5335461, 5928290, 7113948, 7193880, 8892435, 10670922, 11856580, 14227896, 16006383, 17784870, 21341844, 23713160, 26677305, 32012766, 35569740, 42683688, 53354610, 64025532, 71139480, 80031915, 106709220, 128051064, 160063830, 213418440, 320127660, 640255320]

約数ペア:

[(1, 640255320), (2, 320127660), (3, 213418440), (4, 160063830), (5, 128051064), (6, 106709220), (8, 80031915), (9, 71139480), (10, 64025532), (12, 53354610), (15, 42683688), (18, 35569740), (20, 32012766), (24, 26677305), (27, 23713160), (30, 21341844), (36, 17784870), (40, 16006383), (45, 14227896), (54, 11856580), (60, 10670922), (72, 8892435), (89, 7193880), (90, 7113948), (108, 5928290), (120, 5335461), (135, 4742632), (178, 3596940), (180, 3556974), (216, 2964145), (267, 2397960), (270, 2371316), (356, 1798470), (360, 1778487), (445, 1438776), (534, 1198980), (540, 1185658), (712, 899235), (801, 799320), (890, 719388), (1068, 599490), (1080, 592829), (1335, 479592), (1602, 399660), (1780, 359694), (2136, 299745), (2403, 266440), (2670, 239796), (3204, 199830), (3560, 179847), (4005, 159864), (4806, 133220), (5340, 119898), (6408, 99915), (6661, 96120), (8010, 79932), (9612, 66610), (10680, 59949), (12015, 53288), (13322, 48060), (16020, 39966), (19224, 33305), (19983, 32040), (24030, 26644)]