19941340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{659}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 24965060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 659, 890, 1318, 1513, 1780, 2636, 3026, 3295, 6052, 6590, 7565, 11203, 13180, 15130, 22406, 30260, 44812, 56015, 58651, 112030, 117302, 224060, 234604, 293255, 586510, 997067, 1173020, 1994134, 3988268, 4985335, 9970670, 19941340]

約数ペア:

[(1, 19941340), (2, 9970670), (4, 4985335), (5, 3988268), (10, 1994134), (17, 1173020), (20, 997067), (34, 586510), (68, 293255), (85, 234604), (89, 224060), (170, 117302), (178, 112030), (340, 58651), (356, 56015), (445, 44812), (659, 30260), (890, 22406), (1318, 15130), (1513, 13180), (1780, 11203), (2636, 7565), (3026, 6590), (3295, 6052)]