21184618

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 42674688

約数和(自身を除く): 21490070

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 41, 82, 91, 119, 167, 182, 221, 238, 287, 334, 442, 533, 574, 697, 1066, 1169, 1394, 1547, 2171, 2338, 2839, 3094, 3731, 4342, 4879, 5678, 6847, 7462, 9061, 9758, 13694, 15197, 18122, 19873, 30394, 36907, 39746, 47929, 63427, 73814, 89011, 95858, 116399, 126854, 178022, 232798, 258349, 516698, 623077, 814793, 1246154, 1513187, 1629586, 3026374, 10592309, 21184618]

約数ペア:

[(1, 21184618), (2, 10592309), (7, 3026374), (13, 1629586), (14, 1513187), (17, 1246154), (26, 814793), (34, 623077), (41, 516698), (82, 258349), (91, 232798), (119, 178022), (167, 126854), (182, 116399), (221, 95858), (238, 89011), (287, 73814), (334, 63427), (442, 47929), (533, 39746), (574, 36907), (697, 30394), (1066, 19873), (1169, 18122), (1394, 15197), (1547, 13694), (2171, 9758), (2338, 9061), (2839, 7462), (3094, 6847), (3731, 5678), (4342, 4879)]