20215040

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{929}}^1$

素因数の和:967

約数の個数: 72

約数和(自身を含む): 51324840

約数和(自身を除く): 31109800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 929, 1088, 1280, 1360, 1858, 2176, 2720, 3716, 4352, 4645, 5440, 7432, 9290, 10880, 14864, 15793, 18580, 21760, 29728, 31586, 37160, 59456, 63172, 74320, 78965, 118912, 126344, 148640, 157930, 237824, 252688, 297280, 315860, 505376, 594560, 631720, 1010752, 1189120, 1263440, 2021504, 2526880, 4043008, 5053760, 10107520, 20215040]

約数ペア:

[(1, 20215040), (2, 10107520), (4, 5053760), (5, 4043008), (8, 2526880), (10, 2021504), (16, 1263440), (17, 1189120), (20, 1010752), (32, 631720), (34, 594560), (40, 505376), (64, 315860), (68, 297280), (80, 252688), (85, 237824), (128, 157930), (136, 148640), (160, 126344), (170, 118912), (256, 78965), (272, 74320), (320, 63172), (340, 59456), (544, 37160), (640, 31586), (680, 29728), (929, 21760), (1088, 18580), (1280, 15793), (1360, 14864), (1858, 10880), (2176, 9290), (2720, 7432), (3716, 5440), (4352, 4645)]