157688320

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1987}}^1$

素因数の和:2041

約数の個数: 80

約数和(自身を含む): 390475008

約数和(自身を除く): 232786688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 1987, 2480, 2560, 3968, 3974, 4960, 7936, 7948, 9920, 9935, 15872, 15896, 19840, 19870, 31792, 39680, 39740, 61597, 63584, 79360, 79480, 123194, 127168, 158960, 246388, 254336, 307985, 317920, 492776, 508672, 615970, 635840, 985552, 1017344, 1231940, 1271680, 1971104, 2463880, 2543360, 3942208, 4927760, 5086720, 7884416, 9855520, 15768832, 19711040, 31537664, 39422080, 78844160, 157688320]

約数ペア:

[(1, 157688320), (2, 78844160), (4, 39422080), (5, 31537664), (8, 19711040), (10, 15768832), (16, 9855520), (20, 7884416), (31, 5086720), (32, 4927760), (40, 3942208), (62, 2543360), (64, 2463880), (80, 1971104), (124, 1271680), (128, 1231940), (155, 1017344), (160, 985552), (248, 635840), (256, 615970), (310, 508672), (320, 492776), (496, 317920), (512, 307985), (620, 254336), (640, 246388), (992, 158960), (1240, 127168), (1280, 123194), (1984, 79480), (1987, 79360), (2480, 63584), (2560, 61597), (3968, 39740), (3974, 39680), (4960, 31792), (7936, 19870), (7948, 19840), (9920, 15896), (9935, 15872)]