19808060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 46418400

約数和(自身を除く): 26610340

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 149, 170, 230, 289, 298, 340, 391, 460, 578, 596, 745, 782, 1156, 1445, 1490, 1564, 1955, 2533, 2890, 2980, 3427, 3910, 5066, 5780, 6647, 6854, 7820, 10132, 12665, 13294, 13708, 17135, 25330, 26588, 33235, 34270, 43061, 50660, 58259, 66470, 68540, 86122, 116518, 132940, 172244, 215305, 233036, 291295, 430610, 582590, 861220, 990403, 1165180, 1980806, 3961612, 4952015, 9904030, 19808060]

約数ペア:

[(1, 19808060), (2, 9904030), (4, 4952015), (5, 3961612), (10, 1980806), (17, 1165180), (20, 990403), (23, 861220), (34, 582590), (46, 430610), (68, 291295), (85, 233036), (92, 215305), (115, 172244), (149, 132940), (170, 116518), (230, 86122), (289, 68540), (298, 66470), (340, 58259), (391, 50660), (460, 43061), (578, 34270), (596, 33235), (745, 26588), (782, 25330), (1156, 17135), (1445, 13708), (1490, 13294), (1564, 12665), (1955, 10132), (2533, 7820), (2890, 6854), (2980, 6647), (3427, 5780), (3910, 5066)]