19968340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 51093504

約数和(自身を除く): 31125164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 43, 62, 70, 86, 107, 124, 140, 155, 172, 214, 215, 217, 301, 310, 428, 430, 434, 535, 602, 620, 749, 860, 868, 1070, 1085, 1204, 1333, 1498, 1505, 2140, 2170, 2666, 2996, 3010, 3317, 3745, 4340, 4601, 5332, 6020, 6634, 6665, 7490, 9202, 9331, 13268, 13330, 14980, 16585, 18404, 18662, 23005, 23219, 26660, 32207, 33170, 37324, 46010, 46438, 46655, 64414, 66340, 92020, 92876, 93310, 116095, 128828, 142631, 161035, 186620, 232190, 285262, 322070, 464380, 570524, 644140, 713155, 998417, 1426310, 1996834, 2852620, 3993668, 4992085, 9984170, 19968340]

約数ペア:

[(1, 19968340), (2, 9984170), (4, 4992085), (5, 3993668), (7, 2852620), (10, 1996834), (14, 1426310), (20, 998417), (28, 713155), (31, 644140), (35, 570524), (43, 464380), (62, 322070), (70, 285262), (86, 232190), (107, 186620), (124, 161035), (140, 142631), (155, 128828), (172, 116095), (214, 93310), (215, 92876), (217, 92020), (301, 66340), (310, 64414), (428, 46655), (430, 46438), (434, 46010), (535, 37324), (602, 33170), (620, 32207), (749, 26660), (860, 23219), (868, 23005), (1070, 18662), (1085, 18404), (1204, 16585), (1333, 14980), (1498, 13330), (1505, 13268), (2140, 9331), (2170, 9202), (2666, 7490), (2996, 6665), (3010, 6634), (3317, 6020), (3745, 5332), (4340, 4601)]