21308480

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3917}}^1$

素因数の和:3951

約数の個数: 56

約数和(自身を含む): 53739288

約数和(自身を除く): 32430808

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3917, 5440, 7834, 15668, 19585, 31336, 39170, 62672, 66589, 78340, 125344, 133178, 156680, 250688, 266356, 313360, 332945, 532712, 626720, 665890, 1065424, 1253440, 1331780, 2130848, 2663560, 4261696, 5327120, 10654240, 21308480]

約数ペア:

[(1, 21308480), (2, 10654240), (4, 5327120), (5, 4261696), (8, 2663560), (10, 2130848), (16, 1331780), (17, 1253440), (20, 1065424), (32, 665890), (34, 626720), (40, 532712), (64, 332945), (68, 313360), (80, 266356), (85, 250688), (136, 156680), (160, 133178), (170, 125344), (272, 78340), (320, 66589), (340, 62672), (544, 39170), (680, 31336), (1088, 19585), (1360, 15668), (2720, 7834), (3917, 5440)]