28531490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 58296672

約数和(自身を除く): 29765182

約数列:

[1, 2, 5, 10, 13, 26, 41, 53, 65, 82, 101, 106, 130, 202, 205, 265, 410, 505, 530, 533, 689, 1010, 1066, 1313, 1378, 2173, 2626, 2665, 3445, 4141, 4346, 5330, 5353, 6565, 6890, 8282, 10706, 10865, 13130, 20705, 21730, 26765, 28249, 41410, 53530, 53833, 56498, 69589, 107666, 139178, 141245, 219473, 269165, 282490, 347945, 438946, 538330, 695890, 1097365, 2194730, 2853149, 5706298, 14265745, 28531490]

約数ペア:

[(1, 28531490), (2, 14265745), (5, 5706298), (10, 2853149), (13, 2194730), (26, 1097365), (41, 695890), (53, 538330), (65, 438946), (82, 347945), (101, 282490), (106, 269165), (130, 219473), (202, 141245), (205, 139178), (265, 107666), (410, 69589), (505, 56498), (530, 53833), (533, 53530), (689, 41410), (1010, 28249), (1066, 26765), (1313, 21730), (1378, 20705), (2173, 13130), (2626, 10865), (2665, 10706), (3445, 8282), (4141, 6890), (4346, 6565), (5330, 5353)]