19498780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:179

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 30175460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 43, 70, 79, 82, 86, 140, 158, 164, 172, 205, 215, 287, 301, 316, 395, 410, 430, 553, 574, 602, 790, 820, 860, 1106, 1148, 1204, 1435, 1505, 1580, 1763, 2212, 2765, 2870, 3010, 3239, 3397, 3526, 5530, 5740, 6020, 6478, 6794, 7052, 8815, 11060, 12341, 12956, 13588, 16195, 16985, 17630, 22673, 23779, 24682, 32390, 33970, 35260, 45346, 47558, 49364, 61705, 64780, 67940, 90692, 95116, 113365, 118895, 123410, 139277, 226730, 237790, 246820, 278554, 453460, 475580, 557108, 696385, 974939, 1392770, 1949878, 2785540, 3899756, 4874695, 9749390, 19498780]

約数ペア:

[(1, 19498780), (2, 9749390), (4, 4874695), (5, 3899756), (7, 2785540), (10, 1949878), (14, 1392770), (20, 974939), (28, 696385), (35, 557108), (41, 475580), (43, 453460), (70, 278554), (79, 246820), (82, 237790), (86, 226730), (140, 139277), (158, 123410), (164, 118895), (172, 113365), (205, 95116), (215, 90692), (287, 67940), (301, 64780), (316, 61705), (395, 49364), (410, 47558), (430, 45346), (553, 35260), (574, 33970), (602, 32390), (790, 24682), (820, 23779), (860, 22673), (1106, 17630), (1148, 16985), (1204, 16195), (1435, 13588), (1505, 12956), (1580, 12341), (1763, 11060), (2212, 8815), (2765, 7052), (2870, 6794), (3010, 6478), (3239, 6020), (3397, 5740), (3526, 5530)]