16863980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{739}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 40776960

約数和(自身を除く): 23912980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 739, 815, 1141, 1478, 1630, 2282, 2956, 3260, 3695, 4564, 5173, 5705, 7390, 10346, 11410, 14780, 20692, 22820, 25865, 51730, 103460, 120457, 240914, 481828, 602285, 843199, 1204570, 1686398, 2409140, 3372796, 4215995, 8431990, 16863980]

約数ペア:

[(1, 16863980), (2, 8431990), (4, 4215995), (5, 3372796), (7, 2409140), (10, 1686398), (14, 1204570), (20, 843199), (28, 602285), (35, 481828), (70, 240914), (140, 120457), (163, 103460), (326, 51730), (652, 25865), (739, 22820), (815, 20692), (1141, 14780), (1478, 11410), (1630, 10346), (2282, 7390), (2956, 5705), (3260, 5173), (3695, 4564)]