389706880

素因数分解:

$2^7\times 5^1\times {\mathrm{53}}^1\times {\mathrm{11489}}^1$

素因数の和:11561

約数の個数: 64

約数和(自身を含む): 949303800

約数和(自身を除く): 559596920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 265, 320, 424, 530, 640, 848, 1060, 1696, 2120, 3392, 4240, 6784, 8480, 11489, 16960, 22978, 33920, 45956, 57445, 91912, 114890, 183824, 229780, 367648, 459560, 608917, 735296, 919120, 1217834, 1470592, 1838240, 2435668, 3044585, 3676480, 4871336, 6089170, 7352960, 9742672, 12178340, 19485344, 24356680, 38970688, 48713360, 77941376, 97426720, 194853440, 389706880]

約数ペア:

[(1, 389706880), (2, 194853440), (4, 97426720), (5, 77941376), (8, 48713360), (10, 38970688), (16, 24356680), (20, 19485344), (32, 12178340), (40, 9742672), (53, 7352960), (64, 6089170), (80, 4871336), (106, 3676480), (128, 3044585), (160, 2435668), (212, 1838240), (265, 1470592), (320, 1217834), (424, 919120), (530, 735296), (640, 608917), (848, 459560), (1060, 367648), (1696, 229780), (2120, 183824), (3392, 114890), (4240, 91912), (6784, 57445), (8480, 45956), (11489, 33920), (16960, 22978)]