13828820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 31162320

約数和(自身を除く): 17333500

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 457, 890, 914, 1513, 1780, 1828, 2285, 3026, 4570, 6052, 7565, 7769, 9140, 15130, 15538, 30260, 31076, 38845, 40673, 77690, 81346, 155380, 162692, 203365, 406730, 691441, 813460, 1382882, 2765764, 3457205, 6914410, 13828820]

約数ペア:

[(1, 13828820), (2, 6914410), (4, 3457205), (5, 2765764), (10, 1382882), (17, 813460), (20, 691441), (34, 406730), (68, 203365), (85, 162692), (89, 155380), (170, 81346), (178, 77690), (340, 40673), (356, 38845), (445, 31076), (457, 30260), (890, 15538), (914, 15130), (1513, 9140), (1780, 7769), (1828, 7565), (2285, 6052), (3026, 4570)]