19661280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{40961}}^1$

素因数の和:40979

約数の個数: 48

約数和(自身を含む): 61934544

約数和(自身を除く): 42273264

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 40961, 81922, 122883, 163844, 204805, 245766, 327688, 409610, 491532, 614415, 655376, 819220, 983064, 1228830, 1310752, 1638440, 1966128, 2457660, 3276880, 3932256, 4915320, 6553760, 9830640, 19661280]

約数ペア:

[(1, 19661280), (2, 9830640), (3, 6553760), (4, 4915320), (5, 3932256), (6, 3276880), (8, 2457660), (10, 1966128), (12, 1638440), (15, 1310752), (16, 1228830), (20, 983064), (24, 819220), (30, 655376), (32, 614415), (40, 491532), (48, 409610), (60, 327688), (80, 245766), (96, 204805), (120, 163844), (160, 122883), (240, 81922), (480, 40961)]