51212720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2141}}^1$

素因数の和:2190

約数の個数: 80

約数和(自身を含む): 133866432

約数和(自身を除く): 82653712

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1495, 1840, 2141, 2392, 2990, 4282, 4784, 5980, 8564, 10705, 11960, 17128, 21410, 23920, 27833, 34256, 42820, 49243, 55666, 85640, 98486, 111332, 139165, 171280, 196972, 222664, 246215, 278330, 393944, 445328, 492430, 556660, 640159, 787888, 984860, 1113320, 1280318, 1969720, 2226640, 2560636, 3200795, 3939440, 5121272, 6401590, 10242544, 12803180, 25606360, 51212720]

約数ペア:

[(1, 51212720), (2, 25606360), (4, 12803180), (5, 10242544), (8, 6401590), (10, 5121272), (13, 3939440), (16, 3200795), (20, 2560636), (23, 2226640), (26, 1969720), (40, 1280318), (46, 1113320), (52, 984860), (65, 787888), (80, 640159), (92, 556660), (104, 492430), (115, 445328), (130, 393944), (184, 278330), (208, 246215), (230, 222664), (260, 196972), (299, 171280), (368, 139165), (460, 111332), (520, 98486), (598, 85640), (920, 55666), (1040, 49243), (1196, 42820), (1495, 34256), (1840, 27833), (2141, 23920), (2392, 21410), (2990, 17128), (4282, 11960), (4784, 10705), (5980, 8564)]