161961280

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38933}}^1$

素因数の和:38963

約数の個数: 56

約数和(自身を含む): 415347912

約数和(自身を除く): 253386632

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 38933, 77866, 155732, 194665, 311464, 389330, 506129, 622928, 778660, 1012258, 1245856, 1557320, 2024516, 2491712, 2530645, 3114640, 4049032, 5061290, 6229280, 8098064, 10122580, 12458560, 16196128, 20245160, 32392256, 40490320, 80980640, 161961280]

約数ペア:

[(1, 161961280), (2, 80980640), (4, 40490320), (5, 32392256), (8, 20245160), (10, 16196128), (13, 12458560), (16, 10122580), (20, 8098064), (26, 6229280), (32, 5061290), (40, 4049032), (52, 3114640), (64, 2530645), (65, 2491712), (80, 2024516), (104, 1557320), (130, 1245856), (160, 1012258), (208, 778660), (260, 622928), (320, 506129), (416, 389330), (520, 311464), (832, 194665), (1040, 155732), (2080, 77866), (4160, 38933)]