20739598720

素因数分解:

$2^7\times 5^1\times {\mathrm{179}}^1\times {\mathrm{269}}^1\times {\mathrm{673}}^1$

素因数の和:1140

約数の個数: 128

約数和(自身を含む): 50117292000

約数和(自身を除く): 29377693280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 179, 269, 320, 358, 538, 640, 673, 716, 895, 1076, 1345, 1346, 1432, 1790, 2152, 2690, 2692, 2864, 3365, 3580, 4304, 5380, 5384, 5728, 6730, 7160, 8608, 10760, 10768, 11456, 13460, 14320, 17216, 21520, 21536, 22912, 26920, 28640, 34432, 43040, 43072, 48151, 53840, 57280, 86080, 86144, 96302, 107680, 114560, 120467, 172160, 181037, 192604, 215360, 240755, 240934, 362074, 385208, 430720, 481510, 481868, 602335, 724148, 770416, 905185, 963020, 963736, 1204670, 1448296, 1540832, 1810370, 1926040, 1927472, 2409340, 2896592, 3081664, 3620740, 3852080, 3854944, 4818680, 5793184, 6163328, 7241480, 7704160, 7709888, 9637360, 11586368, 14482960, 15408320, 15419776, 19274720, 23172736, 28965920, 30816640, 32405623, 38549440, 57931840, 64811246, 77098880, 115863680, 129622492, 162028115, 259244984, 324056230, 518489968, 648112460, 1036979936, 1296224920, 2073959872, 2592449840, 4147919744, 5184899680, 10369799360, 20739598720]

約数ペア:

[(1, 20739598720), (2, 10369799360), (4, 5184899680), (5, 4147919744), (8, 2592449840), (10, 2073959872), (16, 1296224920), (20, 1036979936), (32, 648112460), (40, 518489968), (64, 324056230), (80, 259244984), (128, 162028115), (160, 129622492), (179, 115863680), (269, 77098880), (320, 64811246), (358, 57931840), (538, 38549440), (640, 32405623), (673, 30816640), (716, 28965920), (895, 23172736), (1076, 19274720), (1345, 15419776), (1346, 15408320), (1432, 14482960), (1790, 11586368), (2152, 9637360), (2690, 7709888), (2692, 7704160), (2864, 7241480), (3365, 6163328), (3580, 5793184), (4304, 4818680), (5380, 3854944), (5384, 3852080), (5728, 3620740), (6730, 3081664), (7160, 2896592), (8608, 2409340), (10760, 1927472), (10768, 1926040), (11456, 1810370), (13460, 1540832), (14320, 1448296), (17216, 1204670), (21520, 963736), (21536, 963020), (22912, 905185), (26920, 770416), (28640, 724148), (34432, 602335), (43040, 481868), (43072, 481510), (48151, 430720), (53840, 385208), (57280, 362074), (86080, 240934), (86144, 240755), (96302, 215360), (107680, 192604), (114560, 181037), (120467, 172160)]