19916260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:413

約数の個数: 96

約数和(自身を含む): 53286912

約数和(自身を除く): 33370652

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 353, 364, 403, 434, 455, 620, 706, 806, 868, 910, 1085, 1412, 1612, 1765, 1820, 2015, 2170, 2471, 2821, 3530, 4030, 4340, 4589, 4942, 5642, 7060, 8060, 9178, 9884, 10943, 11284, 12355, 14105, 18356, 21886, 22945, 24710, 28210, 32123, 43772, 45890, 49420, 54715, 56420, 64246, 76601, 91780, 109430, 128492, 142259, 153202, 160615, 218860, 284518, 306404, 321230, 383005, 569036, 642460, 711295, 766010, 995813, 1422590, 1532020, 1991626, 2845180, 3983252, 4979065, 9958130, 19916260]

約数ペア:

[(1, 19916260), (2, 9958130), (4, 4979065), (5, 3983252), (7, 2845180), (10, 1991626), (13, 1532020), (14, 1422590), (20, 995813), (26, 766010), (28, 711295), (31, 642460), (35, 569036), (52, 383005), (62, 321230), (65, 306404), (70, 284518), (91, 218860), (124, 160615), (130, 153202), (140, 142259), (155, 128492), (182, 109430), (217, 91780), (260, 76601), (310, 64246), (353, 56420), (364, 54715), (403, 49420), (434, 45890), (455, 43772), (620, 32123), (706, 28210), (806, 24710), (868, 22945), (910, 21886), (1085, 18356), (1412, 14105), (1612, 12355), (1765, 11284), (1820, 10943), (2015, 9884), (2170, 9178), (2471, 8060), (2821, 7060), (3530, 5642), (4030, 4942), (4340, 4589)]