640419840

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{6949}}^1$

素因数の和:6982

約数の個数: 144

約数和(自身を含む): 2219899500

約数和(自身を除く): 1579479660

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 960, 1024, 1152, 1280, 1440, 1536, 1920, 2048, 2304, 2560, 2880, 3072, 3840, 4608, 5120, 5760, 6144, 6949, 7680, 9216, 10240, 11520, 13898, 15360, 18432, 20847, 23040, 27796, 30720, 34745, 41694, 46080, 55592, 62541, 69490, 83388, 92160, 104235, 111184, 125082, 138980, 166776, 208470, 222368, 250164, 277960, 312705, 333552, 416940, 444736, 500328, 555920, 625410, 667104, 833880, 889472, 1000656, 1111840, 1250820, 1334208, 1667760, 1778944, 2001312, 2223680, 2501640, 2668416, 3335520, 3557888, 4002624, 4447360, 5003280, 5336832, 6671040, 7115776, 8005248, 8894720, 10006560, 10673664, 13342080, 14231552, 16010496, 17789440, 20013120, 21347328, 26684160, 32020992, 35578880, 40026240, 42694656, 53368320, 64041984, 71157760, 80052480, 106736640, 128083968, 160104960, 213473280, 320209920, 640419840]

約数ペア:

[(1, 640419840), (2, 320209920), (3, 213473280), (4, 160104960), (5, 128083968), (6, 106736640), (8, 80052480), (9, 71157760), (10, 64041984), (12, 53368320), (15, 42694656), (16, 40026240), (18, 35578880), (20, 32020992), (24, 26684160), (30, 21347328), (32, 20013120), (36, 17789440), (40, 16010496), (45, 14231552), (48, 13342080), (60, 10673664), (64, 10006560), (72, 8894720), (80, 8005248), (90, 7115776), (96, 6671040), (120, 5336832), (128, 5003280), (144, 4447360), (160, 4002624), (180, 3557888), (192, 3335520), (240, 2668416), (256, 2501640), (288, 2223680), (320, 2001312), (360, 1778944), (384, 1667760), (480, 1334208), (512, 1250820), (576, 1111840), (640, 1000656), (720, 889472), (768, 833880), (960, 667104), (1024, 625410), (1152, 555920), (1280, 500328), (1440, 444736), (1536, 416940), (1920, 333552), (2048, 312705), (2304, 277960), (2560, 250164), (2880, 222368), (3072, 208470), (3840, 166776), (4608, 138980), (5120, 125082), (5760, 111184), (6144, 104235), (6949, 92160), (7680, 83388), (9216, 69490), (10240, 62541), (11520, 55592), (13898, 46080), (15360, 41694), (18432, 34745), (20847, 30720), (23040, 27796)]