19638961940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1\times {\mathrm{883}}^1$

素因数の和:1689

約数の個数: 96

約数和(自身を含む): 44872603776

約数和(自身を除く): 25233641836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 524, 653, 655, 883, 1306, 1310, 1703, 1766, 2612, 2620, 3265, 3406, 3532, 4415, 6530, 6812, 8489, 8515, 8830, 11479, 13060, 16978, 17030, 17660, 22958, 33956, 34060, 42445, 45916, 57395, 84890, 85543, 114790, 115673, 169780, 171086, 229580, 231346, 342172, 427715, 462692, 576599, 578365, 855430, 1112059, 1153198, 1156730, 1503749, 1710860, 2224118, 2306396, 2313460, 2882995, 3007498, 4448236, 5560295, 5765990, 6014996, 7495787, 7518745, 11120590, 11531980, 14991574, 15037490, 22241180, 29983148, 30074980, 37478935, 74957870, 75534469, 149915740, 151068938, 302137876, 377672345, 755344690, 981948097, 1510689380, 1963896194, 3927792388, 4909740485, 9819480970, 19638961940]

約数ペア:

[(1, 19638961940), (2, 9819480970), (4, 4909740485), (5, 3927792388), (10, 1963896194), (13, 1510689380), (20, 981948097), (26, 755344690), (52, 377672345), (65, 302137876), (130, 151068938), (131, 149915740), (260, 75534469), (262, 74957870), (524, 37478935), (653, 30074980), (655, 29983148), (883, 22241180), (1306, 15037490), (1310, 14991574), (1703, 11531980), (1766, 11120590), (2612, 7518745), (2620, 7495787), (3265, 6014996), (3406, 5765990), (3532, 5560295), (4415, 4448236), (6530, 3007498), (6812, 2882995), (8489, 2313460), (8515, 2306396), (8830, 2224118), (11479, 1710860), (13060, 1503749), (16978, 1156730), (17030, 1153198), (17660, 1112059), (22958, 855430), (33956, 578365), (34060, 576599), (42445, 462692), (45916, 427715), (57395, 342172), (84890, 231346), (85543, 229580), (114790, 171086), (115673, 169780)]