156979840

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4021}}^1$

素因数の和:4101

約数の個数: 64

約数和(自身を含む): 381526920

約数和(自身を除く): 224547080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 2440, 3904, 4021, 4880, 7808, 8042, 9760, 16084, 19520, 20105, 32168, 39040, 40210, 64336, 80420, 128672, 160840, 245281, 257344, 321680, 490562, 514688, 643360, 981124, 1226405, 1286720, 1962248, 2452810, 2573440, 3924496, 4905620, 7848992, 9811240, 15697984, 19622480, 31395968, 39244960, 78489920, 156979840]

約数ペア:

[(1, 156979840), (2, 78489920), (4, 39244960), (5, 31395968), (8, 19622480), (10, 15697984), (16, 9811240), (20, 7848992), (32, 4905620), (40, 3924496), (61, 2573440), (64, 2452810), (80, 1962248), (122, 1286720), (128, 1226405), (160, 981124), (244, 643360), (305, 514688), (320, 490562), (488, 321680), (610, 257344), (640, 245281), (976, 160840), (1220, 128672), (1952, 80420), (2440, 64336), (3904, 40210), (4021, 39040), (4880, 32168), (7808, 20105), (8042, 19520), (9760, 16084)]