64955440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{331}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 165989376

約数和(自身を除く): 101033936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 223, 331, 440, 446, 662, 880, 892, 1115, 1324, 1655, 1784, 2230, 2453, 2648, 3310, 3568, 3641, 4460, 4906, 5296, 6620, 7282, 8920, 9812, 12265, 13240, 14564, 17840, 18205, 19624, 24530, 26480, 29128, 36410, 39248, 49060, 58256, 72820, 73813, 98120, 145640, 147626, 196240, 291280, 295252, 369065, 590504, 738130, 811943, 1181008, 1476260, 1623886, 2952520, 3247772, 4059715, 5905040, 6495544, 8119430, 12991088, 16238860, 32477720, 64955440]

約数ペア:

[(1, 64955440), (2, 32477720), (4, 16238860), (5, 12991088), (8, 8119430), (10, 6495544), (11, 5905040), (16, 4059715), (20, 3247772), (22, 2952520), (40, 1623886), (44, 1476260), (55, 1181008), (80, 811943), (88, 738130), (110, 590504), (176, 369065), (220, 295252), (223, 291280), (331, 196240), (440, 147626), (446, 145640), (662, 98120), (880, 73813), (892, 72820), (1115, 58256), (1324, 49060), (1655, 39248), (1784, 36410), (2230, 29128), (2453, 26480), (2648, 24530), (3310, 19624), (3568, 18205), (3641, 17840), (4460, 14564), (4906, 13240), (5296, 12265), (6620, 9812), (7282, 8920)]