28873990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 56320992

約数和(自身を除く): 27447002

約数列:

[1, 2, 5, 10, 17, 34, 85, 97, 103, 170, 194, 206, 289, 485, 515, 578, 970, 1030, 1445, 1649, 1751, 2890, 3298, 3502, 8245, 8755, 9991, 16490, 17510, 19982, 28033, 29767, 49955, 56066, 59534, 99910, 140165, 148835, 169847, 280330, 297670, 339694, 849235, 1698470, 2887399, 5774798, 14436995, 28873990]

約数ペア:

[(1, 28873990), (2, 14436995), (5, 5774798), (10, 2887399), (17, 1698470), (34, 849235), (85, 339694), (97, 297670), (103, 280330), (170, 169847), (194, 148835), (206, 140165), (289, 99910), (485, 59534), (515, 56066), (578, 49955), (970, 29767), (1030, 28033), (1445, 19982), (1649, 17510), (1751, 16490), (2890, 9991), (3298, 8755), (3502, 8245)]